Wavelengths seen in 2D plots
I am simulating the intereaction of EM radiation with a plasmonic element. I have set up the study to parametize the wavelength of the incoming radiation from 4 um to 20 um. In looking at the fields in...
View ArticleCylindrical geometry
Hi there, I'm trying to model RF coils for MRI with Comsol, and I'm not finding it terribly easy to create the actual geometry. As can be seen in your example...
View ArticleBirefringence
Can any one help me to provide the answers of the following questions. 1. Provide a detailed physics on the pitch dependence of birefringence. 2. Please provide a detailed physics behind the increasing...
View Articlehiger order modes
How could i find the higher order modes using comsol 4.2 version. Samiul
View ArticlePacked bed mean field model
Hi, I am trying to solve the time-dependent concentration profile in a packed bed using the mean field theory rather than the whole CFD definition of the problem. The mass giving rise to the...
View Articlethin layers
Dear all, I am analysing the waves induced inside a thin layer using a shaker. I apply a sine wave on one of the edges and the analysis is in the time-domain. I am using Comsol v4.0. Altough I am using...
View ArticleCOMSOL Conference Boston 2013 - One month away from Early Bird Abstract...
Hello, I hope you are as excited about the upcoming conference season as I am! As a reminder, the Early Bird Abstract Submission Deadline for the COMSOL Conference Boston 2013 is June 21st, exactly one...
View ArticleContact penetration
Hi I have a contact model and there are two domains that one moves with a prescribed displacement and presses down the other one. I have a contact pairs, but the results seems like one domain...
View ArticleIncorporating Lagrange Multipliers
Hello again, Thanks to the help of those on the forum I was able to incorporate weak constraints to get accurate flux calculations in my diffusion models. However, I am trying to understand how exactly...
View ArticleDeformed Geometry
Hi all, I have a lo of questions and responses related to that but I haven't been able to find a proper solution to the problem I have. Basically, I have a first geometry (domains 1 and 2) which is...
View ArticleCAD IMPORT AND MESHING ERROR
Hi everyone, i m trying to import a .sat file to COMSOL. But after applying meshing at the time of applying stationary study an error is displayed i.e. I am trying to Failure to find a solution...
View Articlearea changes when going from 2D to 3D
When drawing a circle the are changes when going from 2D to 3D in a 2D drawing or in a plane a circle is drawn with radius (57,61/2)[mm] resulting in a surface of 0.002602m² when extruding this plane...
View Articlemodeling of airlift reactor
Hi everyone, I have building a model to simulate airlift reactor for vaccine production. I had following the "modeling of airlift reactor" in model library COMSOL but I can't input mass balance to get...
View ArticleCOMSOL APPCRASH and closed
hi I have a problem for the new server computer using COMSOL 4.3 First of all, the performance of server computer is below. OS: windows 2008 server RAM: 512GB CPU: AMD 6238 (x4) GPU: Geforce GTX 550 Ti...
View ArticleLorentz force
Hi, with the new v4.0a, I miss the predefined Lorentz forces in the AC/DC module. In magnetic field mode (mf), there is at least the Lorentz force mf.FLtz_xyz. In magnetic and electric field mode...
View ArticleModeling a Kerr Effect
Hello. I want to model a material with birefringence that depends on the electric field inside the medium, similar to the Kerr effect where the index depends on the square of the field. This is...
View ArticleGeometry variation within Time-Dependent solving.
Hello, I was wondering if it's possible to change geometry according to time ( via internal or external function(MatLab)) ? ie: Making a block depth function of time.
View ArticleInterpolation Function Help
Good Morning, I'm having trouble using COMSOL's interpolation function, and I was hoping someone might be able to help. I'm trying to load data from a tab-delimited text file. I've followed the...
View ArticleWhat's the formulation of "mechanical energy flux" in COMSOL?
There are "mechanical energy flux," "complex mechanical energy flux" which I can derive or plot in the result. They are cool but still I want to know the definitions of them, how it calculates, and I...
View ArticleHarmonic Load
Hey, I'm new to COMSOL and I have a few questions about it. I'd like to do a Frequency Response Analysis of a structure with a harmonic load ''shaking'' it with a pre-determined force and frequency ,...
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