export error
Hi I run a simulation and tried to export the results. I am getting the following error . Unknown property, property: spacevars. what does it mean?
View ArticleHow to check mass balance?
Hi, I was wondering if there is any way to check the mass balance in Comsol? It's kind of hard and time consuming to calculate the mass balance by hand, so does Comsol provide it for users by default?...
View Articledifferential equations with few variables in Comsol 4.2
Hi for all! I'm trying to simulate the heat and mass transfer process in wood during drying. I need to investigate the distribution of temperature T and moisture content U in the wood during the drying...
View ArticleQuality factor for piezo device in 4.3
Hi all- I'm trying to calculate the quality factor for a piezo mems device in 4.3, using the piezo physics interface. Whenever I try to calculate it, I get an error saying that it's unable to calculate...
View ArticleHow to solve a general PDE without any physical meaning?
I am a learner for COMSOL. I am trying to solve a general PDE without any physical meaning. If anyone could help me on this or show me any tutorial, I will appreciate it very much.
View ArticleNew Book on Chemical Engineering Computing Available
Hi there, I just want to share with all of you that a new book about chemical engineering computing has recently been released. Written by Bruce Finlayson, it's the second edition of his book...
View ArticlePolysilicon vs. P-Silicon
Hello everybody I have a question regarding materials in Material browser. Is P-silicon (Polycristalline) equal to polysilicon? Because we have polysilicon too so I am not sure which on I should...
View Articlestructural mechanics in comsol 4.2
Hello sir/madam, Can i do electromechanical analysis in 4.2 version for cantilever beam type structures
View ArticleImporting the solved Soltion
Hi, I have solved a solution for a 3D object, I'm going to import this solution for another solver so that I could be able to use the results for the solution 1 and save running time. Is there anybody...
View ArticleWhere is the Curl operator in the PDE physics?
Hello, I tried to modify the PDE from the rotating machinery physics a little and wanted to define it in the PDE physic. The problem I have is that I can't see any curl operators in the coeficient or...
View Articledifference between segregated and fully coupled solver comsol
Hi folks, I am trying to understand the advantages of each of these solvers, and when to use or the other. I looked through the docs but I am left with the same doubts. Can anyone point out the main...
View ArticleHeat transfer simulation result is much larger than experimental result
I modelled the heat transfer through a hollow brick to calculate the equivalent thermal conductivity. So general heat transfer and weakly compressible Navier-Stokes modules were taken to build the...
View ArticleMagnetic force imposing on magnetic fluid in 3D magnetostatic field (no...
Hi Everyone I try to do with a simulation of magnetic fluid imposed on magnetic force in magnetostatic field (no currents), but the results show that there seems to be no magnetic force on magnetic...
View Articlecut point graphics
Hi The cut point plot in my 2D model shows the point as a huge red dot (much bigger than the domain size). How can I reduce the size of this dot so it sits nicely inside the domain? Thanks David
View ArticleCreating an external Magnetic Field
Hi, I am trying to model a superconducting wire under magnetic field. Since the design of a SC wire includes a circular variable dependency of the conductivity and the current density, I have to use...
View ArticleThermoelectric Model
Dear All, I am looking to find and study example models relating to thermoelectric effect modeling using COMSOL. Does anyone have any reference source/model on thermoelectrics which could be used ?...
View ArticleMicrochannel flow with heat transfer
Hi, I'm trying to model flow in microchannels with a heat source. We do have the microfluidics module, heat transfer and fluid flow but we do not have the CFD module. That's why I do not have an access...
View ArticleReaction Module
I'm using two phase, level set and have coupled it with reaction engineering module (synchronized with multiphysics and a second model with empty geometry was automatically created) for reaction of...
View ArticleFinding maximum along a line
Hi community, in my model (2D, x- and y-positions) I need to know the x-position of the maximum temeperature on any fixed y-position during the calculation over the whole domain. The problem is, that...
View ArticleHow to apply current on induction coil?
Hello, I am using Comsol Multiphysics 4.3, It's a new environment for me. My goal is to design the induction coil and put an alternativ current in it with the help of AC/DC module. I designed a model...
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