Equation View of Heat Transfer
when the Physics "Heat Transfer" used, we can see such Variables in the Equation View: ht.kxx Thermal conductivity, xx component ht.kyx Thermal conductivity, yx component ht.kzx Thermal conductivity,...
View ArticleEigenvalue Calculations In RF Module With Perfectly Matched Layers: Radiation...
Hi everyone, I have one part general info that maybe others will find helpful, and one part question. Here goes: I've been trying to compute the eigenvalues of dielectric GaAs disk structures (embedded...
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 ArticleAbout creation of struturegeomerty
Hi...! I am a student of University of Pune,working on Rf MEMS Switch. I can't get how to create a structural geometry of cantilever beam in Com sol multiphysics. So please help me to create a...
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 ArticleGEOMETRY OF A SOLID ON A CYLINDRICAL SURFACE
Hi, I have two questions: 1)what kind of strategies can I use to attack a strip of flexible polymer on a cylindrical surface? 2)Can I measure the length of portions of curves whose design geometry in...
View ArticleHow to plot required results??
Dear sir, I wish to create an imaginary plane in required location of my model and plot the results like Maximum, Average and Minimum temperatures at that particular plane. How can I do that?
View ArticledT/dt
Hi I cannot work out how to get dT/dt ( temperature variation rate) when using COMSOL. I am a beginner and currently using a version 4. I am modelling the heat transfer of a thin pyroelectric solid and...
View ArticleCoupling three physics "variables not solved for"
Hi, I have to solve three different physics together in COMSOL . physics 1-Electrostatics: solving for variable V physics 2-Electrostatics:solving for variable V2 physics 3-Navier stokes...
View ArticleForced Vibration of Vertical Simply Supported Beam with 'Overhang'
Hi, I'm trying to simulate the forced vibration of a beam that stands vertical and is supported by two simple supports that are shaken back and forth by a motor as in the attached schematic. I've also...
View ArticlePML Scaling factor in COMSOL 4.3
Hi, I am doing a 3D simulation with COMSOL 4.3 to find the field distribution and the mode of a waveguide where all the cladding, the core and the substrate have different refractive index. I have...
View ArticleOptical properties of metals in the MIR
Hi All, I am simulating gold nanostructures that, because of their geometry, are expected to have a plasmonic resonance in the MIR (aprox. 4 microns). I am using models from nanohub to get the optical...
View ArticleVolume Integration and Surface Integration
What is the use of volume integration and surface integration for the parameters like temperature, pressure and velocity??
View ArticleSimulation of solar cell
Hi... I am designing a solar cell in comsol as part of my research program and I am not sure how to provide Light intensity as input.. Kindly help..
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 ArticleProperties and funkction of model
Hey. Could someone explain what it is used commands are listed in the Annex to this post? They can be used? And where can I find the documentation for this command? Thank you.
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