Reaction Engineering Module - Discontinuity in the concentration over time plot
Hello all,While using the reaction engineering module, I sometimes noticed that there were some discontinuity in the concentration over time plot that were generated from a converged solution. It seems...
View ArticleHow to define a boundary condition where temperature is a function of...
Hi, I'm new to Comsol and I'm working on a time dependent model. The temperature distribution along a wall is a function of temperature gradient and also something calculated based on result from...
View Articlethe interface of magnetostrictive
the interface of magnetostrictive is defaultly mf module,could I replace it with mfnc module by changing the variable in it? because the mf module is too difficult to convergence. besides,could you...
View ArticleCannot create native file C:\Users\jong_\.comsol\v53a\recoveries\MPHRecovery
when I compute the COMSOL, it encounter a problem "Cannot create native file C:\Users\jong_.comsol\v53a\recoveries\MPHRecovery" .This problem for me is a new one, who can help me.
View ArticleAssembling of matrix takes very long
Hello!I'm trying to solve a (quite simple) 2D-axissym. model of a fixed bed reactor. I have four species where only three a actually taking part in the exothermic reaction. The chemistry is modeled in...
View ArticleOptical transition for solar cell
Hi everyone I am currently trying to simulate solar cell based on Semiconductor-Electromagnetic Waves Coupling . The main node that combines two physic modules is optical transition. However, i dont...
View ArticleCalculating the speed of sound in orthotropic material
Hi,I am trying to simulate the ultrasound from a phased array into a material. The material is orthotropic/anisotropic. We know that speed of sound varies according to direction of propagation in...
View ArticleGeneric COM API Error
Hi,I found and adapted a COM based connection to the Comsol server to use with different prog. languages (mainly python). The original author and version is from git ("cmphy"). I can start the server,...
View ArticleCoil Optimization
Hallo, my modell is rectangular coil. Number of turns is 10. The distribution of coil is not equal. The distances of different turns are not identical. I want to use Optimization modell to get best...
View ArticleUsing Application Builder to automate data export
I have a COMSOL simulation in which the solution has been generated and the data I want to export has been setup (what data, filename, etc established in the settings). I have 12 different data sets to...
View Articlesimulation to Ionizing air blower
Ionizing air blower is a kind of static equipment for industries which depends on the high-pressure generator to ionize the air and make it become positive and negative ions. Then the air blower will...
View ArticleODEP Simulation
Hello,I am a newbie to Comsol. I would like to model the effect of incident light on a photo conductive layer of hydrogenated amorphous silicon. The a-Si: H layer seperates two conductive and...
View ArticleBio-electronics, Bio-engineering
I am trying to design a magnetic biosensor and I want to perform antibody-antigen reaction on surface for detection. Please help me out and suggest which modules of COMSOL I should use to design this...
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Implementing 1D first order PDEs in the weak form
Hi everyone,I need some help to implement weak form PDEs in comsol.I'm trying to implement the following system of 1D first order PDEs in the weak form:with .In weak form these equations areSo I think...
View Articlewarning when importing geometry from autocad 3D
after importing geometry from autocad 3D the messages says there are 15 warning (warnings: face to face inconsistency) how can i deal with that?
View ArticleCOMSOL MULTIPHYSICS PLASMA MODULE
hii i am using COMSOL software for modeling 1 D dbd plasma. ........................ i want to add nitrogen and oxygen cross section in my model. as plasma is at atmospheric pressure. comsol only have...
View ArticleComsol with MatLab, Execution error
Hi everyone,I was running a simulation of the .m file of comsol with matlab and I get the following error, I tried to solve it but it was not possible:No appropriate method, property, or field...
View ArticleVolume average - multiple evalutions without tedious work
Hello everyone, in my project i would like to obtain average values of magnetic fields over ~100 or so domains in my model. My question is as follows: is there any quick/not extremely tedious ways to...
View ArticleReverse Bias of schottky diode (2D)
I want to know whether any one has succeeded in using COMSOL to simulate the reverse bias of schottky diode or not? My model can only work at forward bias condition. When it comes to the reverse bias...
View ArticlePost Processing
I solved my one dimensional PDE in weak form in comsol 4.3, Now I don not know how to get the values (answer) of the dependent variable u, because I am new. Please, can someone help me. Thanks.
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