Unable to create mesh : Error Free Tetrahedral 1
Hi everybody, I am having this error when I try to mesh a 3D structure : The following features have problems : Features : Free Tetrahedral 1 I don't find a way to have more information about this...
View ArticleEuler-Euler Model: reached singularity
I am running a Euler-Euler model and get a singularity error about six seconds into a 12 second analysis. It appears that there is a high velocity flair at an inlet when the singularity occurs. I have...
View ArticleStrain localization
Hi everybody, If I press a soft block of material with elastic modulus of 60 MPa with a hard sphere, when would I have the strain localization? Does buckling means strain localization or a sign of...
View ArticleBezier Curve equation
Hello, My model involves drawing a second order Bezier curve, and as part of it I have to be able to get the "Y" value on the curve for a certain "X" value. Normally that wouldn't be an issue because...
View Articlefunctionality of time-dependent adaption
Hello, I’m member of a research group at the University of Augsburg which is working on acoustic-wave-simulation in composite materials using COMSOL. Since the problems we solve are extremely...
View ArticlePotential Distribution in AC/DC Module, Comsol 4.3
Hey, i am working with the AC/DC Module in Comsol 4.3. I have a formula for the potential distribution (V) and I want to calculate the electric field by using the relation: E = - grad(V). Are there any...
View ArticleUsing a built in physics interface
Hi All, I have a modified equation for the fluid continuity equation based on the perturbation expansion. The modified eqn is: d(rho_1)/dt + rho_0 * div (v_1) = 0 (also attached the eqn in the png...
View ArticleThermal bridge
Hi, I study thermal bridge during my internship and I try to simulate basics thermal bridges like a training session. I'm blocked in a final analysis after modelling. I don't know what expression I...
View ArticleMemory Error
Hi everyone, When computing recently a 3D geometry with conjugate heat transfer module, I got this error:"Failed to find a solution. Out of memory during LU factorization. Returned solution is not...
View ArticleSimulatneous temperature distribution...!
Dear Comsol Users, I am willing to come over to you again, this time with some questions I would like to be enlighted. I've built a 3D heat exchanger (coil) inside a material (cylinder) and with...
View Articleintergrate S Parameters from an LTSPICE Modell to comsol 4.3
Dear memebers. I would like to integrate S parameters to COMSOL 4.3. Can any one tell me where to find links or saimlier stuff to do this ? I have a book Multiphysics Modeling using Comsol but I cant...
View ArticleLink Matlab to Comsol in MAC - path problem
Dear all, in the bin/comsol.ini file I defined MLROOT=/Applications/MATLAB_R2011b.app The problem is that when clicking the app COMSOL with Matlab a problem appears. checking the setlog I says...
View ArticlePipe Heating Control HELP!!!
Hey everyone, Attached is a model I have of air being heating as it passes throug a pipe. Right now the Q (heat source term) was calculated to raise the temperature of the pipe from the inlet temp of...
View ArticleAbout conductive electrodes of piezoceramics layers
Hello everyone, I am working on a piezoelectric energy harvester(substructure and a piezoceramic layer). I am applying a point force on the substructure and measuring the voltage from the surface of...
View ArticleThe relative error is greater than the relative tolerance..Error!!!
Iam a newbie to comsol. And Iam learning comsol for my research. I simulated my first simulation and I got the below mentioned errors. Failed to find a solution. The relative error (4.6e+004) is...
View Articleharmonic perturbation
I have a question about harmonic perturbation I assigned a 1 A current to a cylinder in mf physics using multi-turn coil and solved it with a 60Hz frequency using frequency domain. If I assign 0.1 A to...
View ArticleGrain Modeling
In ComSol 4.2 how can we give different crystal to different grains Please suggest any method , as I am able to change crystal orientation of whole model but not of each boundary unit separately....
View ArticleBeginner needs help.
I am new in Comsol and having a bit of problem. I am trying to make a simple 3D model of an electromagnet with core of nonlinear material. It is standard, cylindrical shape electromagnet. I have...
View ArticleEvaluation License
I wish to try on "Pipe Flow Module" and for that I want an initial evaluation license. Can anyone help me out how to get it? The main problem is that I should try hands on that module and than ask my...
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