Nonconverging
Hi,I got this error in my simulation, How should I solve itNonlinear solver did not converge. In Velocity u, Pressure p: No convergence, even when using the minimum damping factor. Time:...
View ArticleDiffusion induced stress in 1D
Hi guys, I found the attached file in the application library regarding diffusion induced stress during cycling of Li-ion batteries. However, the chosen geometry is held in 1D, which seems not very...
View ArticleInfinite sheet of metal
Hello, I am trying to simulate a dc current circular loop in front of an infinite metallic sheet with a finite thickness Δ along the z axis. By infinite i mean in both directions x and y. How can i...
View ArticleAC electric field with two parallel electrodes
Hi! Can you show how to simulate AC electric field with two parallel electrodes? Thanks
View ArticleElasticity Matrix for Composite Materials
Hello,I'm trying to find the effective material properties of a composite representative volume element. I've been trying to use periodicity or separate load cases and expect anisotropy in the...
View ArticlePiezoresistive Coefficent of n-type Silicon- sigma0 function of N or nd?
The below post is related to an archived discussionHi!I am trying to simulate resistivity change in n-type doped Si given some mechanical stress. My Comsol results for resistivity change are 10E-5...
View ArticleElectric Current with square wave
First of all, thank you for taking your time to read this post. Hopefully, you guys can give me some pointer. I have been using the classkit COMSOL 5.5 while following closely with the example...
View ArticleCreation of solar irradiation profile on solar trough receiver surface
Intensity on the receiver tuber is computed by ray tracing study in gemetrical optics. Can you please help me with its distribution presentation? I would like to use the profile for heat transfer model...
View ArticlePlease Help me! Feature: Time-Dependent Solver 1 (sol1/t1) Undefined material...
Feature: Time-Dependent Solver 1 (sol1/t1) Undefined material property 'mur' required by Ampère's Law 1.NOTE: I Checked all material properties are defined properly. And Mur stands for
View ArticleDefining charge on a sphere
Hello everyone! I am a new user to COMSOL. Can anyone please help me with the given problem? I want to define a sphere that is positively charged. I am not quite sure how to do this in a 3D...
View ArticleMaterial Sweep While Changing Study Step
Hello!I'm trying to calculate electric heat with three different cases and, using these results, expect temperature rise. I want to use three Electric Current physics with Stationary solver and Heat...
View ArticleSimulation of Surface Plasmon Polaritons on Kretschmann Configuration
Hi,When simulating SPPs on Comsol so that I can calculate the magnetic reflected field on the plasmon ressonance to determine the Reflectance x Incident angle at the surface (prism/material/air), which...
View ArticleElectric Field Strength Diagram
Hello, I'm still very inexperienced using Comsol. I wanted to visualize the distribution of the electric field between oppositely charged electrodes to know its effect on human blood RBCs during...
View ArticleHow to apply strain to a 3D block in one direction in COMSOL?
I have a 3D block of an elastic material. I stretch it from one surface in one direction and for example I stretch it for 5 mm in Y direction. so my input load is either external stretch or external...
View ArticlePlot result in a cylindrical coordinate
Hello, I want to visualize the stress tensor in the cylindrical coordinate. Currently, I have the output from a 3D solid mechanical model. The expression I choose is solid.sx, solid.sy, solid.sz and...
View Articleelectric field distribution with respect to arc length plot
Hello, I'm still very inexperienced using Comsol. I wanted to plot the relationship between the arc length and the electric field distribution as shown in the figure below. Unfortunately, I am not...
View ArticleIntegrate 2D Axisymmetric and 3D Components
I have 2 separate .mph files that I would like to integrate. One is a thermal analysis on a 3d model and the other is a thermal analysis and magnetic fields analysis on a 2d axisymmetric model. What is...
View ArticleFeedback control during time-dependent simulation
Hello, I would be curious to hear if it is possible to somehow implement feedback in Comsol, particularly in time-dependent/transient pressure acoustics simulations. What that concretely means: I would...
View ArticleCurrent pulse
Hi, I am aiming to model a stimulating electrode in a biological medium. My simulation works for a single value of stimulating current but I would like to investigate a single transient pulse or train...
View ArticleCoil Node: Using different expressions for Coil current (pre-computation)
Dear all,I'm currently looking for a solution for the problem described in the title. The idea is, that a specific coil geometry (e.g. nTurns, nLayers, conductor radius, ...) leads to different coil...
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