Trial Passcode
How can I get comsol trial passcode ? actually i have comsol account, but i have not trial passcode since I started to make my comsol account
View ArticleHeat transfer and reaction dynamics of glass fiber reinforced nylon laminates
Model is a glass fiber reinforced nylon composite laminated plates, layer Angle 0 and 90, think x y direction of heat transfer coefficient is the same, caprolactam is nylon monomer, over time, the...
View Articleeigenfrequency study of solid with membrane
Hi? I am using COMSOL 5.4 to draw the dispersion curve of the structure with membrane added to the solid. However, I am troubled by boundary conditions.The model that I am trying to analyze is a...
View ArticleMembrane physics containing gas and coupled to solid mechanics
Dear All,I a trying to develop a simulation involving the nanoindentation of pressurised membranes. My main question here is, has anyone been able to couple solid mechanics (indenter) with membrane...
View ArticleProblem of loading a text file
Hello everyone, I have a text file, but each time I want to load it by comsol, I receive an error of cannot load the file. Here is my file, is there anyone who can help me for that please? Comsol...
View ArticleIterative Solvers for 3D Electromagnetic Waves Problems with PMLs
Dear all,I am having a very hard time with trying to set an iterative solver that does converge for electromagnetic wave problems in 3D when using perfectly matched layers (PMLs). In particular I want...
View ArticleNon-catalytic reaction in Com
I am trying to model heterogeneous non-catalytic gas-solid reactions in a packed bed, in which the material of the solid particles reacts with the gas flowing through the bed and becomes another...
View ArticleHow to obtain beat length (coupling length) of a 3D silicon photonic...
Hiii, I am trying to simulate a directional coupler using COMSOL with Beam envelope method and boundary mode Analysis. However it is getting difficult to identify even and odd modes, as some single...
View ArticleSurface-to-Surface Radiation
Hello! Tell me please different between boundary conditions: heat flux and external radiation source. I have two COMSOL project with thermal analysis: 1) Heat Transfer in Solids; 2) Heat Transfer With...
View ArticleCoffee Moka Pot Problem - Air expansion and fixed volume of water flow
Hello,I am in a student group that is trying to simulate making coffee in a moka pot with a simplified geometry (shown in image). We are trying to get the volume of air in the lower reservoir to expand...
View ArticleSimulation of magnetocaloric effect
In the Comsol conference article, I saw the magneto-caloric effect simulated by A. Noume related to the article, but I do n’t know how it was made, and I do n’t know if anyone can help.
View ArticleModeling gas-solid non-catalytic reaction
I am working on gasification of biomass. In this, char (a solid phase) reacts with carbon dioxide (gas phase) to form carbon monoxide (gas phase). I need to model this system in a plug flow reactor, in...
View ArticleProblem with the convergence of Mooney Rivlin model
Dear all ; Im trying to model an hyperelastic tissue using Mooney Rivlin (MR) model in Comsol. When I use parameter values that satisfies the stability condition (below), the software never converges....
View ArticleMoving source and Time dependent geometry
I was trying to model a moving heat source over a plate. So the area around the source would keep on melting when it is moving. In each time step the material whose temperature is more than melting...
View ArticleSurface Plot vs. Volume Plot
Hello,For my simulation I would like to plot the Von Mises stress of a domain in a 3D Plot Group. However, I get different results if I use a Surface or a Volume within the 3D Plot Group. The stress...
View ArticleHello
I have version 5.4 and it doesn't have an induction heating in the heat transfer physics. Is there an add-on package for the induction heating physics?, and how can I get it ?
View ArticleImporting a complex geometry of a fault into the 3D geological model
Hello,I am struggling with importing complex geometries of fault systems into my 3D geological model in COMSOL. I have tried many techniques and all of them seem to fail. See the description below:1) I...
View ArticleLivelink for Matlab error
Hi All,How do you extract the results in Livelink with Matlab. I can use mphglobal on the tuning fork example but get an error when I try it on a plasma exampleI get an error when I...
View ArticleMake 1D simulation visible in 3D
Hi guys, I'm pretty sure, that this is possible, but I don't know, how to do it. So, my problem uses a cylinder as geometry. However, due to symmetry, I only want to do a 1D simulation to reduce...
View ArticleCustomize the physics equations
Hello everyone,I am modeling a set of experiments in which I need to make some changes to the default equations and relatively new to COMSOL.In the CFD module, what I would like to to do is to make one...
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