Time solver dynamics - advice
I'm in "currents and voltages" applying a current density pulse within a copper short going through the glass dielectric of a spherical copper capacitor. This is a biological equivalent, there is no...
View ArticleHow to construct a new equation in COMSOL interface? What kind of file format...
Hi, Anyone can suggest me some way to construct my own equation in COMSOL? Thanks Alex Lee
View ArticleType of physics needed to solve thermal stress and strain between 2 materials...
Hi, I'm still a new man in COMSOL Simulation. Basically, i'm not quite sure how to use the suitable physics to include in my problem stated in the subject matter. Can anyone help me on that? Since i'm...
View ArticleLarge Deformation Analysis- Convergence Problem
Hi All, I encounter a convergence problem in my COMSOL model. It is greatly appreciated if someone help me to solve this problem. As you can see in the attached model, I am modelling a cartilage using...
View ArticleFailed to evaluate variable. - Variable: mwp.V0 1 - Global scope
Hello dear Comsoler, dc.cir1.R1_i is something like in the dc module the current through R1 of circuit1... I can somehow find out what the variable name is... but what when there is a space between the...
View ArticleUndefined value found
Dear COMSOL Community I have a question regarding the example of the Vanadium Redox Flow Battery (www.comsol.com/showroom/documentation/mode​l/14153/). I have tried to simulate it but I get following...
View ArticleHow to figure out the wave type for scattering boundary condition?
Hello, I'm a newbie in Comsol and I have a question, which you might be able to answere. I want to simulate the absorption and scattering of nanoparticles illuminated with an incident plane wave. My...
View ArticleModeling a spring and damper system
I am having trouble modeling a simple 2D spring mass damper system. The geometry comprises the spring at the upper end anchored (fixed) attached to a square mass which in turn is attached to a damper...
View ArticleCOMSOL APPCRASH and closed
hi I have a problem for the new server computer using COMSOL 4.3 First of all, the performance of server computer is below. OS: windows 2008 server RAM: 512GB CPU: AMD 6238 (x4) GPU: Geforce GTX 550 Ti...
View Articlecoil on the iron build!
Hallo everyone, please help me, i wanna only to build a coil on a iron core und this with Comsol, bu i don´t know how is going.. :/ Thank´s you in forward!
View ArticleCantilever Strain at Resonance Frequencies
Hello, I am new to Comsol and am trying to simulate strain in various structures at their eigenfrequencies. I have no problem finding the eigenfrequencies, but the amplitude in the eigenfrequency study...
View ArticleInduced Time Varying Displacement of a Thin Material
We are trying to model a flat panel speaker with multiple exciters placed on a thin sheet of plexiglass or similar material. We would like to set up a time varying displacement at the location of an...
View ArticleBelt Conveyor Modeling
I'm curious to know if anyone has done any modeling work with a belt conveyor? I'm specifically looking at optimization work for a wire belt, conveying bur cotton fiber. Any information on belt...
View ArticleInternal/Compressive stress in a material
Hello everyone, I have a question about internal stress generation in Comsol. My model consists of two different materials on top of each other. One of the materials (the most outside material in the...
View ArticleLinear induction motor with AC/DC Module
I'm trying to simulate a linear induction motor in comsol using the Magnetic fields physics in the AC DC Module and I am facing a couple of issues. 1. BH_Cuves and non linear solver: I would like to...
View ArticleSpecifying maximum tensile strain in Comsol
Hi everyone, My question is on material properties available in Comsol. I'm using the solid mechanics module of Comsol, and the analysis type is stationary. Currently I have included an elasto-plastic...
View ArticleLarge Magnetic Force
Hello I'm modelling a simple E-shaped core made of iron and everything looks fine to me (!) There is an air gap between the core and the armature to which the magnetic force is applied. The magnetic...
View Article2-Step Full Field followed Scattered Field Simulation
I am trying to solve for the scattered electric field from a gold nanoparticle on a semiconducting substrate, using a 2-step process identical to the example file "Scatterer on Substrate." When solving...
View ArticleContinuity equation and momentum equation
Hi.. i'm new in comsol.. i'm doing 2 d simualation of wind passes through the hill by comsol multiphysics 4.2. May i know, did i need to specify momentum and continuity equation (ux+vy=0 and...
View Articlehow did I acquire the position of particles in particle tracing module
I have a confusion which is to get the data of particles when I use matlab linking with comsol. But the function of mpheval is error. For instance, qx=mpheval(model,{'qx'},'dataset','part1','t',0);...
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