Unable to establish symmetric boundary
In the case of Thermo-Photo-Voltaic Cell, When it comes to the establishment of symmetric boundaries, as follows(（http://cn.comsol.com/model/thermo-photo-voltaic-cell-494） ): Symmetry 1 1 In the...
View ArticleHow to select specific objects more easily?
I'm having trouble selecting specific objects in my geometry. This is used for a lot of different things, one is when I am trying to do a boolean operation for previously made objects, I need to select...
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Scattering boundary condition for microwave heating
Hi allI want to use the following scattering boundary boundary condition in 2D cylindrical coordinate.Is it the same scattering boundary condion built in comsol? If it is not ..please help me to...
View ArticleHow to findElasticity matrix
Hi All, I d'now how to find elasticity matrix ,coupling matrix &relative permittivity for tungsten and beryllium copper material pls if any one know help me
View ArticleLaminar flow + Solid or Multibody dynamics couple in assembly mode
Dear all,I try to understand coupling in an assembly mode by using Laminar flow+Solid or Laminar flow+Mutlibody dynamics module. To do this, I'm following a easy task which is pipe(water) +...
View ArticleAdaptive mesh refinement vs. Automatic Remeshing
Hi, I am evaluating pit expansion through pitting corrosion in stainless steels. I dont know which of the possible options (i.e. adaptive mesh refinement and automatic remeshing) in a time-dependent...
View ArticleGas diffusion
I want to simulate radon diffusion migration but don't know what physics field shoule be chosen.
View ArticleOscillation in the infinite element domain
Hello, I tried to generate a homogeneous magnetic field in Comsol using infinite element domian. The major domain is a 2D rectangle and I defined layer on both left and right side to generate the...
View ArticleA FEM Question
Hi,I use COMSOL regularly but I don't know how the finite element method (FEM) works exactly. So, my question might be a bit awkward.How can COMSOL draw a 2D or 3D Far Field plot for different number...
View Articlezoom in/out with mouse wheel
Hello, Once I updated my COMSOL from V5.4 to 5.5, my mouse wheel that was able to zoom in/out geometry, figures, etc won't work any more. How do I enable this zoom in/out functionality?Thanks, Dezhang Chu
View ArticleDesign of unipolar wave in comsol?
dear, I have to design unipolar sine wave in nano seconds attached jpg file with my question can any one help me to draw ?
View ArticleThe problem of point boundary does not apply
Hi, everyoneNow I want to build a physical field of Point Mass Source, but the point I want to choose doesn't apply to the border, I had built the point in the geometry. Did I do something wrong? I...
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A confusing result for magnetic force calculation
Hello everybody,I am modeling a very simple model and willing to calculate the magnetic force. This model consists of two permanent magnetic blocks and a piece of iron, as seen in the attached image....
View ArticleEigenfrequency Search Method Around Shift For Microwave Cavity
Hello,I am new to Comsol. I am performing an eigenfrequency study on a rectangular microwave cavity, and I need it to resonate close to a specific frequency. I was able to find a geometry that was...
View ArticleParametric Sweep messes up Geometry
Hello all!I am simulating Heat Transfer in Solid with Surface-to-Surface Radiation. During the simulations I want to vary the angles of some conical heat shields. I use parametric sweep for this, but...
View ArticleLumped Port Magnetic Field Time Dependent Study
I have run into issues trying to perform a Magnetic Fields Time Dependent Study. When setting up a uniform lumped port I get the error "Uniform lumped port should be placed between two conductive...
View ArticleUsing COMSOL to simulate the voltage signal of the detecting coil of...
Hello everyone, I am doing a simulation of an electromagnetic ultrasonic transducer(EMAT) in COMSOL, but the simulation results are not quite right. The voltage in the detection coil appears to contain...
View ArticlePlasma Module: positive_column_2d solver error
I tried running the application module provided by COMSOL, and I'm getting this error:Nonlinear solver did not converge. Maximum number of Newton iterations reached. There was an error message from the...
View ArticleImporting a capacitor model
i want to simulate a capacitor to check its ESR variation with time at different temperatures. I want to check it for a commercial capacitor, how can i import a commercial capacitor say an electrolytic...
View Articlehelp
I have this message when I want to run the simulation with convection boundary condition in design domain. the convection boundary condition is given by :...
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