error: The object 'Type: Save Point Geometry Tag: geom1' is not contained in...
Hi all- I have been working on a model for some time, and just trying to optimize the solver settings. I saved the model today, and then opened it up again to work on it, and now get this error for any...
View ArticleStructure with 2D and a 1D truss...
Hello all, I am trying to implement this (see attachment). I guess it should be relatively easy, and for sure lots of people know how to do it :). After "spending" quite a lot of time, I decide to...
View ArticleOne 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 ArticleVariable exchange between Matlab and Comsol
Hello everyone, I am running Comsol using the LiveLink with Matlab and am trying to do the following: I have a value, dt, which is 0 everywhere in the beginning. (I can either use dt=0, make an...
View ArticleIssue with temperature distribution
I am using COMSOL for simulating heat generated by current through a metal bar for my 3rd year dissertation project. I am having an issue with the output following the simulation. I have applied a...
View ArticleInterpretation of results
Hi, what is the difference between "Line Integration", "Line Maximum/Minimum" and "Line Average" under subnode "Derived Values"? What is calculated specifically? How to interpret the results? For...
View Articleparametrize the position of a point in the geometry gives an error message
Dear Comsolfriends, I want to do a parameter study for the size of my geometry, but I get the following error when trying to set the position of a POINT using a parameter defined before in MATLAB...
View Articlesave the mesh points into a text file
How can I save the mesh points into a text file or some similar? Thanks!
View ArticleIssue importing ipt files from Inventor with the CAD module
Hi, I can't seem to import a simple IPT cad file (that has a helix built in) from inventor, the import module gives me an error back saying: Not a valid ENTITY type for this operation - Detail:...
View ArticleScattering boundary conditons for non-normal incident
Hi all, I'm wondering, if it possible to use the scattering boundary conditions in the RF module to make a boundary transparent for a plane wave with a known wave-vector (which is different from the...
View Article"Undefined value found" Error when simulating EM-Wave on imported 3D Pyramid
Hey all, I am trying to simulate the E-Field enhancements on a micro-pyramid structure for which I imported a pyramid with rounded corners from AutoCAD as a .sat file. I set up everything the way I...
View ArticlePML does not work during wavelength sweep
I was simulating the scattering from a nanodisk by normal incidence. With a spherical PML, the scattering field should be basically symmetric below and above the disk plane. It is indeed so when I...
View ArticleSaving Error
I was runnig a COMSOL simulation with a Parametic Sweep (so it was a very large file). After it finished runnig, I clicked save, COMSOL closed and the following error popped up: OMP: ERROR #134: Cannot...
View ArticleStore solution and use as a boundary condition for the next run
Hi Does anybody knows how to apply the results obtained at the outlet of first run back to the inlet as an inlet bounrady condition? Actually the objective is to study a flow in a long clyinder by...
View ArticleProblem related to imported mesh file
I was trying to import a mesh flle (mphtxt) file from Simpleware Scan FE software. However when I import this mesh file in COMSOL and throw all the physics on it, following error appear : Can you...
View ArticleFuel tank simulation
Hi, I have a project about fuel tank simulation. The thing that I try is similar to the sloshing tank example. However, since the fuel tanks are closed [ :) ] I need to limit the deforming mesh. Has...
View Articlespecifying varing coefficient - interpolation function
Hi all, I would like to specify varing htc via interpolation function and apply it to a heat flux boundary condition. I am attaching a sample file. - Model: 2D-axisymetric (i.e.cylinder, mm), heat...
View ArticleImporting a file from AutoCAD to COMSOL
I have created a 3D building model on AutoCAD and wish to import it to COMSOL for CFD analysis. Can I know the process for importing?
View ArticleVelocity of solution
Hi, Since it depends what speed calculations? I created two identical geometry. One in 2D it is counted in minutes. Second in 3D it is counted for 30 minutes to 1 hour. It is possible to calculate the...
View ArticleAbsolute pressure sensor
I'm working on simulation of absolute pressure sensor. I want to know that when i compute the result for stress it shows the total stress. I want the longitudinal and transverse both stress at...
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