Modeling elastic waves in a solid mechanics study
Hi, I'd like to ask a question concerning the modeling of elastic waves in the structural mechanics module. The geometry is a simple 3D beam, free on all sides. (file attached) My goal is to study the...
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 ArticleSimulation of Dielectrophoresis(DEP)
Hi there. I am a COMSOL v4.2a new user. May I know how to generate DEP effect with this software? Thanks Regards Laura
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...
View ArticleSimulation of passive layer (Cr2O3) growth on a substrate
Hello, my name is Sebastian from Aalen University. At the moment i am trying to simulate a simplified passive layer growth on a stainless steel. The initial idea was to start with the physics "Reaction...
View ArticleRotate Graphics Window 90deg in 2D Axisymmetric
Hi, Is it possible to rotate (90deg.) the graphics window in 2D axi. so the z-axis is horizontal and the r-axis is vertical. Thanks!
View Articlepiezoelectric cantilever coupled with an external electric circuit
Hi Ivan, we're still working on piezoelectric cantilever coupled with an external electric circuit. We obtain very good results in the case of open circuit. When we introduce a load resistance the...
View ArticlePiecewise function implementation
I"ve tried to implement the material properties, more specifically refractive index, in a 2D model of lens. Is there a way to define a piecewise function that describes the refractive index of all...
View ArticleParallel progamming using COMSOL 4.2a
Is it possible to install a license in a cluster? I've already have a Floating Network License (FNL) from 4.2a version installed in a computer that runs in Windows. Could I install the same license on...
View ArticleMultiple physics with same dependent variable
I am working on a model with multiple physics, Electrostatics and Poisson's Equation and the dependent variable in both physics is Electric Potential. How do I set both the dependent variables using...
View Articlehow to plot the velocity profile between any two points in Comsol 4.2
In comsol 3.5, when I want to get the velocity profile from (0,0) to (0,4), I could use postprocessing--> cross section plot parameters --> line plot, then I can input cross section line data....
View ArticleAbout optical force calculation of particles manipulated by microring resonator
Hi,everyone. I want to simulate a structure which includes two bus waveguides and one microring resonator to form an on-chip optical tweezer. One microparticle is placed in the gap area between one...
View ArticleMie scattering in 4.3
Hello, I have already seen some discussion about mid scattering of a gold nanosphere. But I the discussions I have consulted, no one has yet implemented a mie scattering program in Comsol 4.2 or 4.3...
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 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 ArticleModelling Compression of Material at a Rate
Hello, I am a beginner to COMSOL 4.2a and I would like to build a simple model where a material (a cylindrical block of polymer) is compressed at a rate of 10 mm/min. Using Solid Mechanics, I was able...
View ArticleMicrowave oven waveguide configuration
Hi everybody, I am trying to simulate a microwave oven using COMSOL, but I'm still a bit confused about configuring the waveguide. What is the difference between Transverse Electric (TE) and Transverse...
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