Help needed: magnetostatic force calculation using Maxwell stress tensor
This problem has been bothering me for weeks. I read previous posts on this forum on topic of Maxwell stress tensor but still could not find what is wrong. I'm trying to calculate the repelling force...
View ArticleKindly send me the file of calculating reflection and transmission
Hi Zilio, I am doing a same kind of simulation calculating reflection and transmission spectrum using scattered field condition. If you can kindly send me your file, I could solve my problem. What was...
View Articlefrequency-dependent material - with coupled physics
Hi, In the RF module, I have two EMW physics (emw1, emw2) with user-defined frequencies, f1 and f2, which are fully coupled and solved simultaneously in the frequency domain. So for example,...
View ArticleReflectance / Transmittance calculation using PORT
Hello all I want to calculate effect of nanostructure on reflectance and transmittance. As a starting point, I have refered "Fresnel equation" library. Without any nanostructure, the calculated...
View ArticlePhotonic bandgap calculation of 1D/2D PhCs
Hi Ruben, I have seen your post and seems you are working on the calculation of photonic bandgap of PhCs. I have just started work on it for 1D/2D PhC. Can you provide me any sample model or a...
View Articlebandgap analysis
Hi Jens, It seems that you sort out the problem of calculating bandgap of 2D crystals. I did the same thing still got some errors. Can you send your mph file? It will be a great help. Thanks a lot....
View Article3D optical waveguide error
Hello everyone, What I'm trying to do is basically simulate an optical fiber in 3D. I thought it would be a simple task but I'm running into an error. I created an optical fibre with an air cladding....
View ArticleDefining Simulation Region
Hi, I am trying to get the 3D Temperature Distribution for a 3D nanoscaled structure, where I use a plane wave source as a the heat source. For that I use the "Microwave Heating Interface". The...
View ArticleB-H curve for Soft Iron
Hello there ! I am about to use (soft iron) as a core for a saturable device . I need to specify the H( knee) & B(sat) points, but the listed values of B & H in the BH curve seem to away...
View ArticleLight Propagation in Tissue
i just want to simulate the propagation of monochromatic light (800nm) in a 3 Layer tissue model 3D. Does anyone know a working Comsol solution? Problem: to many elements with this wavelength. Setup: 3...
View ArticlePCB w/ Components simulation
Can i take my PCB w/ all the components and simulate in Comsol? My PCB is simple PCB generaly w/ Fet driver that drives a PCB planner coil
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which coupling operator to use?
Hi, I have the field for two different fibers with slightly different geometries (lets call them E1 and E2). Now I want to calculate the integral: where A is the area of both fibers. I was oriented by...
View ArticleTransmission througth an inverse opal structure
Dear all I am trying to simulate with comsol 4.3, wave optics module, the reflection from a structure of inverse opal i make the geometry, mesh and material but i can t figure out how to put a source...
View ArticleMaxwell Stress Tensor
Dear Mamla i hope that you are well, please could you tell me how you evaluate the maxwell stress tensor in you formula that you written and did it match the comsol maxwell stress tensor in the...
View ArticleAssigning material permittivity which is a function of frequency and have to...
Hi I am struggling with a problem. I have a .dat file which contains three column.col 1 is for frequency col 2 is for epsilon_single prime and col 3 is for epsilon_double prime.... 1)how can i assign...
View Articlehow to know the effective mode index corresponds to the value of maximum.
When I use the RF module by the Mode Analysis, in which desired number of modes is 200, it is too much. However, I want to compute the maximum value of total electric energy for the entire effective...
View ArticleHow can I simulate microwave 2.45GHz interference in nanoparticles?
I'm using COMSOL to calculate the scattering parameters for a structure of nanoparticles for a microwave with a frequency of 2.45GHz. An error appears in the end of the calculation every time the size...
View Articlewhy does "Undefined value found in the stiffness matrix" means?
I'm trying to simulate Photonic crystal. As far as I know, there is no need for me to know the stiffness of material in the crystal. However, when I click "compute", comsol always screen error message...
View ArticleTransmission Spectra in RF module
Hi, I'm a beginner in COMSOL. I am using the COMSOL scripting in MatLab. I would like to know how I can get the transmission spectra as shown in Fig 4 of the file attached below. I am looking to plot...
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