Parameterise the position in a text file?
Hello, I want to use the 2D distribution of the relative permeability of a nonlinear calculation in a linear calculation of the same Model with same parameters etc. For that I export the data of the...
View ArticleContinuing Modeling Issues with 2D & 3D piezoelectric SAW model
Hello all, I’m in desperate need of help with my model. The initial model setup is a 2D cross-sectional SAW device where I have silicon, a metallic electrode as my ground, a buffer layer, a...
View ArticleProblem with 3D PDE thin layer mesh
Hi everyone I encountered a problem with meshing a thin layer(~10e-6m) with 3D PDE model. I am not sure how to mesh such thin layer. Has anyone managed to mesh a similar case? Looking forward to your...
View ArticleEigenfrequency seems right, but displacement units are totally wrong.
Dear Comsol Community, in the model attached I have a 20 micron long beam using the Solid Mechanics module to get the Eigenfrequencies. I calculated them manually using Euler-Beam theory and the first...
View Article"Hinge assembly" problem
While going through the solved model 'hinge assembly' given in the COMSOL, I came across some difficulties. Actually, I have to develop a solid model involving hinge joint similar to what is provided...
View ArticleHow to assign a defined function to an electrode????
Hello Friends, Am working on AC/DC Module and new to comsol. Am trying to define a rectangular pulse of 1200v with a duration of 1ns to an electrode and i wish your kind assistance for the same. Thanks...
View ArticleWhich Lithium on battery is used in Lithium ion isothermal 1D comsol model
Who is the manufacturer? which model ? anyboby knows?
View ArticleHow can we merge the different graphs (Two graph) in COM SOL?
How can we merge the different graphs (Two graph) in COM SOL?
View ArticleText file of "Variable( x , y , Parameter )" instead of "Variable( x , y , z...
Hello, I want to plot the results of the despersion of the relative Permeability, with respect to two space coordinates x and y (2D Model) and my parametric sweep variable, named "stage". Actually, I...
View Articleconfusion between comsol 3.5a and 4.3a
hello everyone, It might be a noob question, but could anyone please tell me how this should work in comsol 4.3a. So in comsol 3.5a in order to save the normalized electric field i just did this:...
View ArticleModeling electrical conductivity of CFRP..
Hello everyone, I am trying to set up electric current model for carbon fiber reinforced polymer in COMSOL to investigate electrical conductivity variation with respect to loading fraction of fibers....
View ArticleEnquiry
Dear all, Please I have these three questions to be answered. 1. Why did the comsol 4.0 did not come with k-omega model which I prefer to k-epsilon model but available in comsol 3.4? Because I believe...
View ArticleGeometry present or not depending on a parameter
Hi! I am trying to create a geometry that will have certain elements appear or disappear depending on a variable. For example: I have a variable "var1" that can take the values of 1 or 2. I have a...
View ArticleEstablishing upper and lower limits for a PDE dependent variable
Hi! I'm solving a PDE system in the physics Coefficient Form PDE and I need to stablish and upper and lower limits for the output values of my dependent variables. Thank you!
View ArticleUsing a step function for a stationary study
I am attempting to model a cyclone using the k-epsilon solver and occasionally get some convergence issues. Would it make sense to use a step function to ramp up the inlet velocity? Can I use a step...
View ArticleRotate Plane View
Is there a way to select to xz plane view and rotate the view so the z axis is point up? I want to take screen shots to put into a report, but I need my model to be seen as standing up. There should be...
View ArticleIs it real to simulate Full Lightning Impulse 1,2/50 us in Comsol 4.0?
Hi I simulate electric fields in high-voltage switchgear. In my models I use AC/DC Module Electrostatics (es). If the electrode is under high potential, the boundary condition for that electrode will...
View ArticleThermofluidic Modelling of hydrogen absorption in metal hydride bed
For learning purposes, I was trying to do the this project Thermofluidynamic Modelling of hydrogen absorption and desorption in a LaNi4.8Al0.2 Hydride Bed at...
View ArticleCOMSOL solver control
Hi, I am looking at a problem that solves physics at two different time scales. Basically, I want to do the following At a coarser time scale I want to solve a few partial differential equations...
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?...
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