Comsol range That is, a high order will be used when possible, and a lower order will automatically be employed when necessary to obtain stability. Disco, DiscoClassic, DiscoDark, and DiscoLight RainbowClassic is the rainbow color table used in versions of COMSOL Multiphysics earlier than version 6. The closer I make the ending value of the range to the starting value, the solution converges on the correct solution, so your explanation makes sense. Please login with a confirmed email address before reporting spam If you still need help with Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. If you can't upgrade to version 5. . GEOMETRY 1 Block 1 (blk1) 1 In the Geometry With the RF Module add-on to the COMSOL Multiphysics The inclusion of perfectly matched layers (PMLs) enables absorption of outgoing radiation for a wide range of frequencies and incidence angles. Compared to RainbowClassic, the I am able to find the peak value of the displacement in a frequency response (let's say sweep range is 57 kHz) by using maxop1(pzd. 3a, Version 4. for 1hr i used solver parameters for time stepping range is (0,1,3600) (i. EDT General, Simulation Apps, Results & Visualization Version 5. Ceren B. 1 Reply Last Post Mar 25, 2024, 10:37 a. Please login with a The results in this paper illustrate how COMSOL is used to solve for the radiated electromagnetic fields in the 3D space surrounding the flat spiral coils, in a RF frequency range where the dimensions of the coil are on the order of an electromagnetic wavelength. 1^range(1,10) 产生 10个1 请关注 官方公众号！ The syntax of the range function is explained in section "Entering Ranges and Vector-Valued Expressions" of the Comsol Reference Manual. EST Structural Mechanics Version 4. Shuxin Zheng . Please login with a confirmed email address before reporting After running a parametric sweep in COMSOL that works perfectly and produces the desired results, I saved the file. 1. You can import or load data in files from a spreadsheet program, for example, with the Load from File button () and the Load from File "The solution number is out of range" Posted Jun 19, 2020, 11:21 a. As the initial ion energy increases, the agreement between the CSDA range and computed range improves because the decrease in ion energy is dominated by ionization losses, which cause the ions to decelerate continuously 7 | ION RANGE BENCHMARK 8 Click Import. 4 In the Depth text FORUM "Solution number out of range" KNOWLEDGE BASE Selecting Entities by Index Number ; FORUM Error: Solution number out of range; BLOG How to Model Gearbox Vibration and Noise in COMSOL Multiphysics® FORUM "The solution number is out of range" If stretches were to be used as a measure of the material strain, a stretch range of 0. mph -outputfile tuning_fork_out. Can comsol do this? I want to solve the PDE in comsol in the special range for dependent variable. 5 2 Replies . 01, 1) is a range from 5 to 12 with 101 points. Note the additional regions on the sides of the data range of interest. If you would like to use more colors for a small range around zero and less colors for the extremes, consider using the Color table transformation setting Nonlinear symmetric. Reynolds-stress turbulence models enable accurate simulations of secondary flows in ducts and flows with strong swirl or mean rotation, and a new kinetic energy option enhances simulations of high Mach number flows. While visualizing the results, the legend rescales depending on the solution range for each timestep. Here, you will learn how to categorize eigenmodes using the mode overlap integral in COMSOL Multiphysics In the middle of the parameter range , the simulation domain is a perfect circle, and the symmetry causes some eigenmodes to be mutually degenerate. With COMSOL software, we can predict the exact location of the phase interface. pdf - 0. EDT Fluid & Heat, Chemical, Computational Fluid Dynamics (CFD) 0 Replies . The first line is still at y=0, not y=0. with initial time step 0. The first five eigenmodes The Graphics window provides interactive visualization of the geometry, mesh, and results of your model in the COMSOL Multiphysics ® software. See different formats, examples, and options for entering ranges using the Range dialog box or the range function. Note 7 | ION RANGE BENCHMARK 8 Click Import. 9999 to 1. I am looking for a way to calculate a "volume of a certain region which considered inside the data range". In 1D histograms, the x-axis represents the values of the quantity (as a number of bins or a range of values), and the y-axis represents the count of the total element volume in each interval. 1 s from 0 s to 50 s. Plasma Module. If I use maxop1(pzd. Please login with a confirmed email In solver parametric when I chose analysis type frequency response and for solver I use parametric, I should enter a range of frequencies also and by running Comsol it runs for the range of frequencies that has been defined in solver not excitation frequency. Posted Apr 1, 2022, 1:09 p. 3 1 Reply . Please login with a confirmed email address before reporting spam If you still need help with COMSOL and have an on-subscription license, I only change the output times from range(0,1,480) to range(0,1,600), but the result at TIME=120 differs in the two calculations. EDT MEMS & Nanotechnology, MEMS & Piezoelectric Devices Version 5. The average path length of the protons is compared to published values of the ion range under the continuous slowing down approximation (CSDA) FORUM How can I change the color bar and range in COMSOL animation? FORUM Color range; BLOG From Spectrum to Color: Using Modeling to Understand How Red Glass Is Made; BLOG Surface, Volume, and Line Plots: Visualizing Results on a Heat Sink I've noticed on several occasions that when I change the range and step to new setting the new range and step is ignored and Comsol runs the old settings. When saving to Excel, an Excel Save dialog box appears where you can specify the sheet and range and whether to overwrite existing data, include a header, use a separate column for units, or include the calculated values for the parameters. In this article, we discuss the importance of scaling for a model and how to manually set the scaling of dependent variables. Note: This discussion is about an older version of the COMSOL Multiphysics For each image in the animation the color range remains the same whereas the values of max and min varies. Schrödinger-Poisson. When Uniform or Uniform anisotropic is selected as the Placement, also specify the Number of arrows (default: 200). From the Tolerance list, choose Physics controlled (the default) to use the tolerance suggested by If a value outside of the time range is specified then the nearest timestep (first or last) is used. Maybe I should add: You must select the slice in the model builder window, not in the I am using Comsol 3. 5a. If your range of frequency are from MHz to THz than meshing need to be done for largest frequency. The Lorentz system, which is nonlinear, can be written as follows: with initial conditions: Under Results Overview, there are common sections on the Settings windows. However, solids do not participate in the reaction expression and therefore, the concentrations of formed and reacted solids are computed as source terms (negative for the reagent and positive for the product) as it reacts with the gas (first order I am new to COMSOL and need some help. I am using COMSOL for time dependent simulations. 01), then in continuation third range (0. !! Does Comsol automatically when solve parametric solver consider the range of frequencies as excitation 7 | ION RANGE BENCHMARK 8 Click Import. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help. Any other ideas that work? Thanks Karel . Because right now my Y axis change from (2. These scale factors are automatically determined by default, but sometimes need to be manually tuned. copper conductors) Perhaps, also other Comsol users are interested in this issues. 1, 10), then in continuation forth range(10, 10, 300) please advise me . Best regards Note: This discussion is about an older version of the COMSOL Multiphysics you select Radius and set a range i. These pages give a good rundown of how to plot a solution on only the surfaces you want selected, how to hide different parts of a Error: Solution number out of range. Please login with a confirmed Here, λ is the wavelength, P r is the power transmitted by the reader, G r is the reader antenna gain, G a is the gain of the receiving tag antenna, and P th is the minimum threshold power. Contact; English . g. 1) it does not work. Number of Arrows. To determine the right combination of products for your modeling needs, review the Specification Chart and make Hi I am using comsol to see the temperature change when a laser is shone on the particle. 5 s with a step size of 0. (i. com. Within the Time-Dependent Solver settings, the default option is to store time derivatives. The Graphics toolbar provides tools for completely customizing the graphics display. Thanks, Alex . Numerical The range(0,0. Part 1 of a series. 3 introduces a range of new features for fluid flow and heat transfer modeling. Torben Grumstrup . Please login with a confirmed email address before reporting spam Hello, I am conducting a heat transfer simulation in which I have a dimensionless dependent variable which represents the vapor COMSOL Multiphysics Accurate multiphysics models consider a wide range of possible operating conditions and physical effects. 001, 0. Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior for comsol 4, you can see the model "phase check if in your "old" 3. COMSOL Multiphysics® allows the composition of time-, convergence-, and memory How to limit the temperature range in the interation. This means, in practice, that when the first argument is a linear expression in the dependent variables, the operator returns its derivative with respect to the control variable In a single solution, I separate the total time into several time ranges, and I want to set different time steps for different time range, for example, for time range (t1,t2), the time step is dt1, for time range (t3,t4), it is dt2, -----. Available with the Boltzmann Equation, Two-Term Approximation interface. If you want to define I would like to define a variable in Comsol that takes range values. , the concentration c is limited to c<=0. Browse the Application Gallery and download tutorial models with instructions and view example apps. I can manually fix the range in 3D plot but when generating animation it starts automatic scaling. 4 1 Reply . Explore the features and functionality of the RF Module in more detail in the sections below. Then, when I reopened it, I am unable to view any results and am given the message "The solution number is out of range," essentially voiding the entire dataset of the simulation since I can't do anything with the simulation data. Under the CSDA, the ions are assumed to decelerate so that rate of energy loss is the same at every point along the ion’s trajectory: where E i and E f are the initial and final energy of the ion, respectively, and S (E) is the total stopping Note: This discussion is about an older version of the COMSOL Multiphysics Finally, I setting the “Study 1 --> Step 1: Time Dependent --> Study Settings --> Times” to “range (0, 1e-10, 45e-9)” , the resultant temperature is becoming smaller than the initiate temperature (293. By against, in the turbulent regime the case of my study, is not the case. Numerical "The solution number is out of range" again. The operation consists of an application of ultrasonic waves to pipes in order to detect metal loss and other defects in the pipe wall due to For the Random function, the default range of the argument is [0, 1], maybe it should be changed, but there is no corresponding setting option in the Random function definition interface. At the moment i have to do that by hand. 4 In the Depth text Study with range of data. 005,0. 5a and 4. 01*tt, (TT-1. Is there an option for a varying color range with each animation step? In the 2D plot settings the color range is on auto (not on manual). It limiting a dependent variable to a specified range of values. 1, 10) or more. 4 yo 2. This is a generic tool that is useful in several situations. However, when one looks at the same data at t=300s, the maximum value is 89. TimothyaBigelow . Please login with a confirmed email address before reporting spam. GEOMETRY 1 Block 1 (blk1) 1 In the Geometry Dear Sir, I am using COMSOL 3. As the initial ion energy increases, the agreement between the CSDA range and computed range improves because the decrease in ion energy is dominated by ionization losses, which cause the ions to decelerate continuously You can call this model (having the Parametric Sweep disabled in the GUI) from the command line for a given parameter range by invoking, for example. Posted Jun 3, 2014, 8:25 a. Thomas Middelburg . Instead, terms with higher-order derivatives The Ion Range Benchmark model simulates the passage of energetic protons through silicon with both ionization losses and nuclear scattering. I want to know the reason. 6 GHz at interval of 50 MHz. 1) -----> When I changed the range to (0. GEOMETRY 1 Block 1 (blk1) 1 On the Geometry toolbar, click Block. Posted Apr 19, 2018, 11:47 a. I have searched in the user's guide and in the forum, but i Study with range of data. The average ion range is reported in Figure 2 and compared to published values from Ref. The average path length of the protons is compared to published values of the ion range under the continuous slowing down approximation (CSDA) This average range is then compared to the tabulated range under the Continuous Slowing Down Approximation (CSDA range) as given by Ref. Initial values for a time range. However, I can't find any way to do it. Here, we will demonstrate how to compute the drag forces on an Ahmed body. As the initial ion energy increases, the agreement between the CSDA range and computed range improves because the decrease in ion energy is dominated by ionization losses, which cause the ions to decelerate continuously COMSOL Multiphysics ® version 6. The combination of COMSOL ® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Thanks . The average path length of the protons is compared to published values of the ion range under the continuous slowing down approximation (CSDA) 最近想通过comsol实现一些比较高级的操作，就对内置数学函数和内置运算符相关章节的帮助文档进行了阅读。在comsol中使用各类算子及运算符能够在建模时起到很大的帮助，本文将对帮助文档中的相应章节进行翻译（粗略介绍），对于具体的用法，还需自行查阅相关的帮助文档章节，可以将本文收藏需要的时候再看。 Yes, that seems to have solved it! It is correct that I first calculate the background field from a range of values, then rerun over the same range of values to get the near field solution. A cumulative distribution function (CDF) F(x) is the likelihood that the value of the continuous Hey everyone. Posted Nov 17, 2016, 4:21 a. Send Private Message Flag post as spam. 2 Replies Last Post Aug 5, 2011, Magnus Ringh, COMSOL Lexi Carver COMSOL Employee. GEOMETRY 1 Block 1 (blk1) 1 In the Geometry I want to solve the PDE in comsol in the special range for dependent variable. There are The average ion range is reported in Figure 2 and compared to published values from Ref. 1. Generalized alpha has properties similar to second-order BDF, but the underlying technology is different. ( example: I fixed temperature range to be from 270 to 330, but in the animation in one time frame it is 274 to 280 , the next its 300 to 314, So i consecutive frames . This makes it possible to use models for understanding, designing, and optimizing processes and devices The combination of COMSOL ® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. 65MB Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. For example, if you specify the range as "range(650,50,850)", then you will see levels of 634, 650, 700, 750, 800, 850, and 855 degC. Sai Sanjit Ganti . 05 Many thanks. Posted Oct 18, 2023, 1:50 p. Carlos Gonzalez-Ballestero . uAmpY). In solver parametric when I chose analysis type frequency response and for solver I use parametric, I should enter a range of frequencies also and by running Comsol it runs for the range of frequencies that has been defined in solver not excitation frequency. Any trademarks referenced in this document are the property Note: This discussion is about an older version of the COMSOL Multiphysics "Geometry number out of range" in comsol43a. Analytic Functions are used to specify material properties as Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team. Modeling Phase Change with the Apparent Heat Capacity Method. Please login with a COMSOL makes every reasonable effort to verify the information you view on this page. Numerical COMSOL Multiphysics offers complete access to all of the internal variables and makes it very easy to compute surface forces via integration on a boundary. comsol\v55 Here, λ is the wavelength, P r is the power transmitted by the reader, G r is the reader antenna gain, G a is the gain of the receiving tag antenna, and P th is the minimum threshold power. Resources and documents are provided for your information only, and COMSOL makes no explicit or implied claims to their validity. Thanks Odette. 5 right now and I wondered if there is any way to define the range of Y-axes when doing cross section plotting. If you still need help with COMSOL and have an on-subscription license, please visit our (I happened to notice that Comsol guesses scales very poorly in some cases, so decided to investigate whether this was the source of the problems with my model. Note that while COMSOL employees may participate in the discussion forum, where F is Faraday’s constant; z_i is the charge; c_i is the concentration of the mobile ions, where i is a species index and the summation is made over all N ions; and \rho_\textrm{fix} is the charge density of the COMSOL Multiphysics The new Filter dataset extracts the subset of a geometry where an expression falls within a given range. Built-In User Interfaces. Magnus Ringh, COMSOL Note that while COMSOL employees may participate in the discussion forum, COMSOL ® software users who are on-subscription should submit their questions via the The operator name suffix is an integer i in the range 0 COMSOL Multiphysics uses the forward sensitivity solution with respect to the indicated control variable instead of the primal solution for the evaluation. The Specified combinations type (the default) solves for a number of given combinations of values, while the All combinations type solves for all combinations of values. 2 in the PDE, how to do? 2 Replies Last Post 17 gen 2019, 01:31 GMT-8. Please login with a confirmed email address before reporting spam Hi, I am trying to do a 2D parametric sweep in COMSOL. 1,50) syntax means that the solver will output results in intervals of 0. 5 its not "à la matlab" start:step:end instead of range(), I believe range() came only in 3. freq) I just get the maximum value of the sweep range (i. When I run the simulation with a time range t=0-5s the simulation runs well. You can type a monotonically increasing list of individual values, for example, 0 1 2 5 10 20; use the range operator, for example, range(0,0. I have a running 2D model with heat transfer and now want to set up a temperature profile over time relating to a certain point. In the plot above, you can see a logarithmic decrement variation for the different bending modes with the angular speed for the Note: This discussion is about an older version of the COMSOL Multiphysics then in continuation second range(0. The magnitude of displacement for each of the first five modes can be seen below. Define the argument, extrapolation and smoothing methods, and the functions and their intervals. 2,4,6,8,10 You add a Probe selecting emw. The right-hand side of the equation, F, is where the two methods differ. Use this step when you want to submit COMSOL Multiphysics batch jobs to a job scheduler that in turn runs the batch job on a second computer or cluster. Now we introduce a Coefficient Form PDE interface into the Component, in terms of a Hello Erfan, One of the new features added at version 5. 5 Release Highlights. The value in the Range quotient field (default: 100) determines the ratio between the smallest and largest values in the range of values for the logarithmic arrow length. 1[m]+MySide*Param), where Param is a Parameter (without units), running along a range(0,0. Range of temperature and pressure for initial condition. Published in 2014. m. 1 and maximum time step is also 0. 0. Under Range, select the Manual color range and Manual data range check boxes to manually override the color range and data range, respectively, with values in the Minimum and 5 + 7 * range(0, 0. 764e-7s). Lei Zhang . uAmpY, pzd. I did simulations of a mebrane deflection under different loads and computed for the von mises stress (also see the attached image). 6[GHz]) This will solve the EM over frequency from 2. However, when I run the simulation with the exact same setup with a time range t=0-10s, the simulation crashes almost immediately (t=4. Ivar KJELBERG This is possible in MATLAB, but can it be incorporated into an Expression within COMSOL? Regards, Tom . In the Argument table, enter the following settings: 10 In the Function table, enter the following settings: Create a block of silicon of length L centered at the origin. 1 Reply Last Post Nov 22, 2011, 7:11 a. 7 kHz). 1,1. EDT Results & Visualization, Studies & Solvers, Modeling Workflow Version 5. In other words, I'd like to take different densities of values of time in different ranges in one period. Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH) Send Private Message Flag post as spam. EST Version 5. For a 2D crystal there are two lattice vectors, a 1 and a 2, defined in Figure 1. David Benson . 4 Replies Last Post May 4, 2012, 3:37 a. Felipe Beltran-Mejia. 12 Replies Last Post Feb 3, 2011, 1:51 p. Defining the domain over which the filter is applied. Figure 1: Definition of the square primitive cells ant the lattice vectors a 1 and a 2. And I am running my simulation for 6hrs. The evolution of mode 3 is tracked and animated across the parameter range with the help of a model method. I am seeing X to be range(1,10,100). Kalinowski. GEOMETRY 1 Block 1 (blk1) 1 In the Geometry Another thing that I noticed is that the color range scales itself automatically in the animation. COMSOL Note that while COMSOL employees may participate in the discussion I am simulating a space-dependent 2D gas-solid reaction system, in which solids are reactants and products. 1 Reply Last Post Jul 13, 2012, 10:25 a. In other words, the total probability that the variable x takes on a value somewhere in the range (-∞, ∞) is unity. Despite employing the predefined material properties for both silica glass and silver from the COMSOL library, my results show an anomalous 100% reflectance for wavelengths spanning from 100 nm to 2000 nm. It These six quantities are often expressed as a column vector. 5 makes this easy. Using all combinations can lead to a very large number of solutions. Now, I want to know at which excitation frequency I get this peak displacement. Angulo[1], Dr. I believe this is a simple issue but I can not seem to fix it. Is there any expression using mod() to do this or another way? We will look at how the Semiconductor Module and RF Module, add-on products to the COMSOL Multiphysics 15 orders of magnitude in frequency, and humankind has managed to harness nearly all of it in A Piecewise function is created by splicing together several functions, each defined on one interval. Now my problem is if I extend the time range larger than the present values, the solutions are not converged, saying I change the time range of study 2 from (0, 0. 7 | ION RANGE BENCHMARK Create a block of silicon of length L centered at the origin. Logarithmic decrement for different bending modes in the simply supported rotor system. 2 Replies Last Post 18 ott 2023, 18:51 GMT-4. when I simulate a particle and laser, I see the temperature changes and color-bar shows it (for instance, it shows from 298 K, it goes 340 K). 2 In the Settings window for Block, locate the Size and Shape section. Posted Sep 2, 2014, 5:17 p. Follow along with this blog post for a tutorial guide. Use this study for the self consistent solution Here, λ is the wavelength, P r is the power transmitted by the reader, G r is the reader antenna gain, G a is the gain of the receiving tag antenna, and P th is the minimum threshold power. 9 Locate the Units section. Soua[1] [1]TWI Ltd, Cambridge, UK. Use this study to sweep through a range of reduced electric fields. 3a 0 Replies . I use the "Study1"->"Step1:Frequency domain"->"Study settings" to setup the frequency range I am running a CFD timde-dependent simulation using the mixture model. 3 In the Width text field, type L. Note: This discussion is about an older version of the COMSOL Multiphysics Finally, I setting the “Study 1 --> Step 1: Time Dependent --> Study Settings --> Times” to “range (0, 1e-10, 45e-9)” , the resultant temperature is becoming smaller than the initiate temperature (293. 15 K) as the solver time goes on, which is illustrated in the attachment “negative I'm quite new to COMSOL and currently working through the tutorials. 22 Replies Last Post Jul 21, 2017, 3:46 a. Ash Smith . While some COMSOL 7 | ION RANGE BENCHMARK Create a block of silicon of length L centered at the origin. The evaluation of defect size and nature are two most controversial topics in ultrasonic flaw detection. For example, the dependent variable,i. These are not the times that the solver is using in its time-stepping algorithm. Posted: 1 decade ago . It can only be used for input fields that expect multiple values, such as the output Exponential function ex. Asked 6th May, 2021; Anna Zng; Hello, I would like to define a variable in Comsol that takes range values. Joshua Neronha . ) The idea being to scale the variables to a nominal range where the absolute value is 0-1. !! Does Comsol automatically when solve parametric solver consider the range of frequencies as excitation FORUM Why is the Reflectance 100% Over A Large Range of Wavelengths? BLOG Using the Domain Decomposition Solver for Thermoviscous Acoustics; KNOWLEDGE BASE What hardware do you recommend for COMSOL Multiphysics®? KNOWLEDGE BASE Performing a Mesh Refinement Study; BLOG Using the Domain Decomposition Solver in 7 | ION RANGE BENCHMARK 8 Click Import. It doesn't seem to make any sense. 1,1) defined in a Parametric sweep, and MySide is a global variable that is NOT depending on x,y,z I believe it should work (provided MySide can be evaluated by COMSOL Hey COMSOL-Experts, I want to limit the dependent variable s for an intervall ( 0<s<1). When I simulate plasma torch, in the process of interation the temperature is high which is illogicality ( such as 200000 K). 08) to (0. This prevents comparison of results between two timesteps. So as a x-axis, i want to have the time and as a y-axis, i want to have the temperature. Numerical In both 3. COMSOL Note that while COMSOL employees may participate in the discussion forum, COMSOL ® t=range(start, step, stop) in the transient solver, by adjusting or using several ranges such to nicely follow the changes, especially where you have steep slopes and discontinuities for the load you make either a function and refer to this function of time, or you use directly the formula in the gui field something as you have written The Ion Range Benchmark model simulates the passage of energetic protons through silicon with both ionization losses and nuclear scattering. first value, step size, last value). 5: in earlier versions you Use the Sweep type list to specify the type of sweep to perform. In COMSOL Note: This discussion is about an older version of the COMSOL Multiphysics But: to get an arithmetic mean value: integrate the varying value, then divide by the length of the integration range. comsol batch -inputfile tuning_fork. 99 to 1. 0 versions, the animation color range is different from the range for images taken at different times. For a 1D Plot Group you can control the x- and y-axis limits in the plot group's Settings window (under Axis and Grid Settings). This functionality includes changing the view of your model; zooming in and out of the graphics display; and controlling other visualization options, where A(t) is a time-varying response and ω is the complex eigenfrequency of the system. Using the Load from File button (), you can import or load data in text files created, for example, by a spreadsheet program. Please login Parametric sweep where the range of one parameter depends on the other. 15 K) as the solver time goes on, which is illustrated in the attachment “negative Note: This discussion is about an older version of the COMSOL Multiphysics In the Postprocessing PLOT Paraeters "specificplot" tab, you have the "Range" button to define the manual or auto ranges form the color plot values, once plotted you have also leged and grid functions in the plot menus (specially useful for 1D plots) lower down you can also change the I'm simulating the reflectance properties of a setup comprising a glass substrate with a silver overlay across various wavelengths. 1 1 Reply . I'm currently working on a frame for a undergraduate project. The initial energy of the protons is varied using a parametric sweep from 1 keV to 100 MeV. Please login with a confirmed email address before reporting spam The below post is To seek assistance from COMSOL employees, please contact support@comsol. exclude the higher stress values of the domains that are hidden). range( a,(b-a)/(n-1),b) 10^range(-3,3) 产生：10-3, 10-2, , 103. In the original level set method, F = 0, which gives a pure advective transport equation. Jeff Hiller COMSOL Employee. Posted May 31, 2017, 5:47 a. 5a, but its all a bit old by now ;) Good luck Ivar Magnus Ringh, COMSOL HI, In the Preferences dialog box, which you open from the File menu, change the display format (maximum number of digits) for the Color legend to 8 (on the Graphics and Plot Windows page). Table Learn how to implement data filtering into your models in COMSOL Multiphysics®. I am trying to do a parametric sweep over two variables X and Y. Data must be separated by spaces or tabs. 01*tt)/4, TT)". If the license includes LiveLink™ for Excel ® you can also load variables from a Microsoft Excel Workbook spreadsheet. Of special interest is the question whether solving selected model problems shows that behavior which is known from multigrid theory. My question is how to make this difference repeating in MANY periods. EDT Results & Visualization Version 5. I used "range" operator but it gives me an error of unknown range operator. To solve the time-dependent equations of particle motion, the COMSOL ® software offers a range of different solvers, including robust implicit solvers that can solve even very stiff equations of motion, as well as fast, accurate I would like to adjust the colour range of the von Mises Stress such that it automatically shows the maximum and minimum stress values of the domain that is actually visible in the graphics window (i. Learn how to use ranges and vector-valued expressions in Comsol to create arrays of values for various fields and functions. Thank you and regards, Perdana - Student of engineering Find out how to utilize the power of probability distribution functions to sample random numbers in COMSOL Multiphysics. when I put the particle in water, it just shows one value for temprature, however the temprature changes based on heatmap. Can somebody help me? range函数的用法. A COMSOL Multiphysics implementation of this system, with detailed documentation, can be downloaded here. Note that we are using Φ for both the level set and phase field functions. Some variables are tougher to scale than others; particularly if they rely on a length scale. In Model Libraries, "plasmonic_wire_grating", I want to change it to sweep frequency from sweep degree. Please login with a confirmed email address before reporting spam Posted: 1 decade I imagine it could work, (must be checked) that a geometrical block, with a side of (0. COMSOL does not assume any legal liability for the accuracy of the data disclosed. Both the CSDA range and the projected range are shown. 4545e-10) as you ca see it is not possible to follow the changes. 3 replies. So for example i want to be able to see 6 digits after the point or go to range of e-11. That is, exp (1) is the mathematical constant e (Euler’s number). The animation above shows how mode 3 changes dramatically from near its cutoff at 160 Hz to the upper limit of the Comsol should calculate the wall temperature itself and it should use that temperature for a new run. 01) to (0, 0. 05,0. 1 s; or use any combinations of such input. I would like to set Y to be a function of X such that for Y I have: range(a*X+b, (c-b)/5, a*X+c) where (c-b)/5 just allows for a fixed number of measurements Note: This discussion is about an older version of the COMSOL Multiphysics click on the slice or multislice in the 3D plot group and you will find a range tab in the settings window. 0001, would be used to describe the deformation. For example, a video running from 0 to 300s has a range of -187 to 293. The BDF method is also a Differential-Algebraic system of Equations (DAE) solver. For me it is the fourth tab from top: I have Expressions - Title - Plane data - Ranges. Odette Beaudin I am very new to comsol so any help is greatly appreciated. In COMSOL Multiphysics, the order of the quantities has two conventions: one is the standard notation and the other is the Voigt notation. However, the numerical solution with F = 0 is unstable and of small practical use in most cases. Á. Features and Functionality in the RF Module. The piecewise function is a function of one variable with different definitions on different intervals, which must not overlap or have any holes between them. Posted 18 ott 2023, 13:50 GMT-4 Results & Visualization, Studies & Solvers, Modeling Workflow Version 5. Then an Excel Load dialog box appears where you can specify the sheet and range, whether I am looking for a method to change the range of values on the legend bar. 1 2 Replies . 0, Version 5. Pu. EDT Structural & Acoustics, Geomechanics, Heat Transfer & Phase Change Version 5. EDT 1 Reply . See "Gradient Between Two Colors in Plots" in the COMSOL 5. 4[GHz], 50[MHz], 2. Posted Mar 12, 2024, 11:59 a. Particular functionality may be common to several products. 1? Thanks for help. Please login with a confirmed email address before reporting spam Dear All, I have a - How can I run simulations in low frequency range (i. S. 2 0 Replies . For example, if I want to slowly To use 'range' operator, you should define a parameter and named it in the 'global definitions' at first, then set a 'parametric sweep' in 'study', and choose the parameter, set the range, then The syntax of the range function is explained in section "Entering Ranges and Vector-Valued Expressions" of the Comsol Reference Manual. When used in conjunction with eigenvalue solutions, the setval operator will return a solution that is within a tolerance of the actual eigenvalue. 01, or maybe even 0. (3D or 2D) connected to your time dependent step, go to "Range" and in "Manual color range" you can specify the max and min values to be assigned i am an absolute beginner with comsol and hope you can help me with a small problem. And I can make it in only one period like "range(0, tt/4, tt)" and "range(1. 15 K) as the solver time goes on, which is illustrated in the attachment “negative Note: This discussion is about an older version of the COMSOL Multiphysics My problem is: In laminar flow, the range of the temperature lies between the cold temperature and the hot temperature. In plots, these can be used as an Get an introduction to the features and functionality available in COMSOL Multiphysics® for computing and visualizing statistical quantities. Hi COMSOL forum! I am currently working on a Solid Oxide Fuel Cell (SOFC) simulation. PDT RF & Microwave Engineering, Results & Visualization Version 4. In frequency domain solver, frequency field type this range(2. I attached the picture of my current problem. 4545e-10 to 2. The value of L will be varied as a function of the particles’ initial energy E 0-- see the Parameters list. EDT Acoustics & Vibrations, Cluster & Cloud Computing, Structural Mechanics Version 5. the colormap Get started using the COMSOL Multiphysics® software. from 10kHz and less up to higher frequencies) ? - The provided model is based on the use of Perfect Electric Conductors (loss-free). 2 Replies Last Post Oct 18, 2023, 6:51 p. BLOG RFID Tag Read Range and Antenna Optimization; BLOG Investigating a Three-Port Ferrite Circulator Design with RF Simulation; FORUM Transient simulation output doesn't match input; KNOWLEDGE BASE How does COMSOL Multiphysics In COMSOL Multiphysics, you can use Interpolation, Analytic, and Piecewise Functions to specify a material property. 1,10), or time range of study 3 from (0. EST. I The BDF implementation in COMSOL is of variable order. Please login with a confirmed email address before reporting Learn how to track and categorize eigenmodes in eigenfrequency studies using the COMSOL Multiphysics software. 5: in earlier versions you needed to create a custom color table to achieve the same. I have a surface plot of the z-component of the electric field in a simulation I ran (though I suspect that the question is independent of the value I am plotting) and I want to Usually the richard's equation (for example) is solved for the capillary pressure pc and the velocities u, v, w are results of d (Pc,x), d (Pc,y) and d (Pc,z). To determine the right combination of products for your modeling needs, review the Specification Chart and make The default behavior of the COMSOL ® software is to assume a different scaling for each set of variables in your model. My aim was to have it scale automatically, by using the minimum temperature and minimum temperature +2 as the manual color range. If there is a file graphcyclecolors. Posted Oct 2, 2018, 3:21 p. 3 2 Replies . I would like to know how I can run simulations using lossy conductors (e. 5), which (using seconds as the time unit) gives time steps from 0 to 1. For a 2D Plot Group, you can add one or more View 2D nodes under Results>Views and control the axis settings with the "Lock axis" check box in the View 2D node's Settings window and specify the axis limits and whether to preserve the If you specify a range that includes only a part of the actual data range, COMSOL will "insert" the min or max temperature, or both, as necessary. In the busbar tutorial, there's the issue that the color range for the Temperature surface plot doesn't scale properly. Note that while COMSOL employees may participate in the discussion forum, Note: This discussion is about an older version of the COMSOL Multiphysics How to specify the "Prescribed Displacement" for the given range? Posted Dec 17, 2010, 1:36 p. Here, λ is the wavelength, P r is the power transmitted by the reader, G r is the reader antenna gain, G a is the gain of the receiving tag antenna, and P th is the minimum threshold power. The Parameter switch type makes it possible to run sweeps over selected The Ion Range Benchmark model simulates the passage of energetic protons through silicon with both ionization losses and nuclear scattering. txt in the preferences directory (. e. I want to make a limited cut plane to evaluate the stress in the connection between a beam and a frame. The range of the temperature lies between the cold temperature and a maximum temperature Tmax The average ion range is reported in Figure 2 and compared to published values from Ref. But I want to run my simulation in two different time parts. The left Cauchy-Green deformation tensor also has the principal stretches as eigenvalues. T is the time period given by T = \frac{2\pi}{\Re(\omega)}. Please login with a confirmed email address before reporting spam If you still need help with COMSOL and have an on-subscription license, How can I define variables that takes range values in Comsol? Discussion. For the Coloring and Style section, see Table 21-2. no discernible discrepancy between the computational and experimental results occurs within the range of the angle of 3 | BANDGAP ANALYSIS OF A PHOTONIC CRYSTAL The range for the swept k is determined by the reciprocal lattice vectors of the photonic crystal, and these are determined from the primitive lattice vectors. 01, 0. The multigrid solver implemented in COMSOL Multiphysics® is analyzed with respect to components and with respect to its numerical properties. Please login with a confirmed Long Range Ultrasonic Guided Waves for Pipelines Inspection. neff, and solve this will give you the first value for each case, you need to then adapt the settings of the probe Global variable node to add an operation on the Data Series Operations (last line) Browse solutions to common modeling questions, check for software updates, and log into COMSOL Access to manage your active technical support cases. Magnus Ringh, COMSOL Gunnar Andersson COMSOL Employee. A nice thing about doing a 0 to 1 range is it's easy to modify the progression. Then, specify the function behavior between data points and outside of your range of data. EDT. Table 21-1 provides cross references to the information relevant to these nodes, although the same section can also be available for other nodes throughout COMSOL Multiphysics. GEOMETRY 1 Block 1 (blk1) 1 In the Geometry toolbar, click Block. mph \ -pname L -plist 8[cm],10[cm],12[cm] in order to sweep over the parameters L=8[cm], 10[cm], and 12[cm] (resulting in an output file for each parameter). The peak read range, r, across a frequency range can be referred to as the tag’s resonance and will coincide with the maximum power transmission coefficient, τ. Damo . uAmpY,freq) or maxop1(pzd. -DW Distances: range(0,0. 2 in the PDE, how to do? 2 Replies Last Post Jan 17, 2019, 4:31 a. I've tried many things but the only thing that worked was to create a new Study with the new range & step settings. COMSOL Multiphysics and the Heat Transfer Module together offer a How do we set the axis in comsol 5? Posted Jul 20, 2015, 12:55 a. How do I do this in COMSOL 4. 2a 1 Reply . Download. Looking into the results, each of them are reporting different range of stress which is quite natural. Hello, Here are a couple more resources for what you were asking about, Matt. It can only be used for input fields that expect multiple values, such as the output Hello Erfan, One of the new features added at version 5. kqvq tddfpzb xqkve gztgem nhixcr yvvx gdi xkw khlcrxa sqivm