One way multiphysics coupling within a transient simulation
Hello Fellow Users, I am solving two physics (fluid flow & species transport) in a transient simulation. The fluid flow is not affected by the concentration distribution. As of now, i have...
View ArticleDiffraction Pattern
Hello, This is probably a very simple question. In the diffraction patterns example in the model library, how can I extract the amplitudes (or the intensity)? Many thanks Hamid
View Articlehow to measure max and min electric field of certain surface area ?
I simulated the insulation with a void , ( rectangular and circle) in 2D. any way I want measure the max and min of electric field on the surface of the circle (certain surface) then how can I do THIS?...
View ArticleHow stratify a topographic surface?
Hi, I have to layered a topographic model construct from an XYZ file . I import the file as an interpolation function and then construct the parametric surface. Besides I construct a block (block1) of...
View ArticlePlot an expression along a specific coordinate system
Hi I defined a cylindrical system (r,phi,a) and I'd like to get the results along one of these specific coordinates. Since all the direct results expressions are defined in cartesian coordinates...
View ArticleHow to set properties for material.
I simulated the insulator model in 2D-axial symmetric in AC/DC Module. i use com sol 4.3. i have some doubts related to that. How to set (or) apply a switch threshold value for particular (my model)...
View ArticleFailed to generate mesh for subdomain
Hello everyone, I have a metal nanoparticle (radius = 100nm) next to an emitter embedded in glass ( n = 1.5). The computational domain around the metal nanoparticle and the emitter is also spherical...
View ArticleApproximation curve by an exponential
Hello, I would like to know if it's possible to approximate a curve by an exponential one determine and plot it on Comsol. Thks
View ArticleFrequency Domain Calculation regarding a thin steel plate with piezos
Hello, I did some eigenfrequency simulations regarding a thin steel plate with two piezos attached. (PiezoA and PiezoDUT) I placed the piezos at the maximums of a mode shape at about 122Hz. For the...
View ArticleInput Port Excitation Power for 2D RF Simulation
Hello, I'm having difficulty understanding exactly what the input power is for the port in the RF module in COMSOL 4.3. The unit is declared as watt, but unless there's some predefined thickness, the...
View ArticleUsing a Probe Value for a Stop Condition
Hello fellow COMSOL users. Can someone refer me to a model or tell me how to solve my problem. In a system undergoing resistive heating I want to use the calculated resistive energy as the stop...
View ArticleOblique incidence and floquet condition problem
In the RF module, I found that there are 2 problems. First, When the thickness of the layer which uses scattering boundary condition gets thin (below ~200nm), the direction of power flow...
View ArticleTransient contact model
Dear, I would like to use contact pairs in a transient model. In the COMSOL manual I read that you cannot use contact pairs together with the transient solver. An alternative is to use the parametric...
View ArticleThermal contact resistance
Hello, I'm trying to model a thermal sensor in contact with a solid. To do this, I need to embed a heat source in one material and then see the heat flow into a second material. I also need to account...
View Articlehow to simulate lamb wave in plate in comsol??
Hi, How to simulate lamb wave in comsol??how i will get symmetry mode & antisymmetry mode.?? pls help Regards!! Deepak
View ArticleDEP Model using Comsol 4.3
Hello, I am trying to do a DEP simulation in Comsol 4.3 and I want to apply an AC signal of 10V 14KHz in a pair of electrodes. I am presently using AC/DC model. I am able to apply a DC signal but I am...
View ArticleModel couplings as inputs to functions
Hello All, I am trying to put in a temperature average over a boundary into an analytical function. This isn't working and is producing an error. I was wondering whether anyone would have any...
View ArticleStress simulation in electromagnets
Hi Comsol-Community, since quite some time I am trying to simulate high field electromagnets with Comsol 4.3. When it comes to simpe field calculations of (mostly) 2D-axisymm. coil magnets everything...
View ArticleGenerate report with 4.1
I am wondering how to generate a detailed report like the one below in Comsol 4.1.resource.npl.co.uk/docs/scienc...symmetric/microdisk_report.pdf Couldn't find anything comparable in the documentation.
View Articlecomplex current density
Hi all, I'm working on getting the frequency dependent conductance and susceptance (real and imaginary admittance) of a simple resonating PZT block using the Piezoelectric Devices physics. I seem to be...
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