Plotting the gap distance variable
I am trying to do something very simple, but it doesn't seem to be intuitive. I have a contact pair in the structural mechanics module and I want to plot the gap distance variable as a function of...
View ArticleCalling variable or convert T(x,y,z) = >T(x,y,t) between models
Hi: Please help! I'm very stuck with a quite straightforward problem. I've got two models: 1) Model 1: 3D Heat Transfer Stationary 2) Model 2: 2D Teat Transfer Time Dependent. How can I call T(x,y,z)...
View ArticleImporting real data heat flux boundary condition to COMSOL
Hello all, I'm working on a 2D transient heat transfer project and I can't figure out how to import real data for heat flux vs.time in COMSOL. It only allow me to input a fix value or function, not...
View Articleeddy current
how to get the imaginary component (phase) in the inductor in the high-frequency alternating magnetic field? Comsol 4.2a Help me please
View ArticleLocal maxima of solution
Dear all, I use comsol to solving a certain EDP problem (Laplace equation for exemple in crown domain: 2D or 3D domain). The solution is noted 'u'. I want to calculate the all local maxima of the...
View Article"No frame is defined for 0D applications"
Hello again. I am trying to simulate an E-core transformer. When I click the study 1 and select the show default solver there is an error occurs "No frame is defined for 0D applications" . What is it...
View ArticleElectromagnetic actuator
I have problem with coupling the magnetic that generated by 2D Coil with permanent magnate to actuate the cantilever beam. Also, I have faced problem to specify the boundary of moving mesh that is...
View ArticleInduction heating 2D with magnetic flux concentrator (MFC)
Hi all, I have some problem with an induction heating simulation which has a magnetic flux concentrator (a material with a really high relative permeability) in it. As a result, the metal plate heat up...
View Article"Nonsymmetric matrix found" error and meshing
Hello, 1 - I'm simulating a Newtonian incompressible fluid flow in a porous medium (medium formed by 1000 solid grains). For a mesh of 124816 elements, the computation runs normally and I get results....
View ArticleInduced current/voltage from one coil in another
Dear community, I just started to use COMSOL. Now, I'm trying to model two cylindrical coils with different radius but at the same position (also same length and thickness). I'd like to apply a...
View ArticleTroubles with reading COMSOL text data files and files with interpolation...
Hello everyone! I have some troubles with creating my own reader for COMSOL text data files and files with interpolation functions. I have read "The COMSOL File Formats" section of...
View ArticleCAD data for KEMAR
Hello. I have seen papers with scans of the KEMAR manikin, such as from Mads Jensen when he was at Widex. I am in need of CAD data (e.g. STEP file) for the KEMAR head. Does anyone have such data? Would...
View Articlecalculating average element size
Hi, I am trying to characteise the effect of mesh quality and element size on the solution of a model. I have generated a standard and several refined meshes using an external software (Simpleware) and...
View ArticleElectrodeposition of chrome
Hello, We are trying to model a chrome plating process with a non-dissolving (inert) anode. We used the Tertiary, Nernst-Planck module with a moving mesh. We set up the electrodes as "External...
View ArticleError in Jacobian
Can I know what the error means??"Failed to find consistent initial values. Segregated group 1 Failed to evaluate operator Jacobian. Operator: nif, Geometry: 1, Boundary: 12 13 14 15 17 18 19 20 24 25...
View ArticleBoundary condition at interface of two different materials in structural...
Hi, I am trying to simulate a structural mechanics problem that utilizes 3D solid stress-strain module. I have a square plate of elastomeric material having a thikness in micro meteres and on top of...
View ArticleChanging License
I wish to change the license of my COMSOL software from my institute's "Floating License" to "Trisl Version". Can I know how to do??
View ArticleFunction as parameter.
Hello It is possible to use a function as a parameter in the geometry. For example, replace the radius of the circle function of time. Thank you.
View Articlestate space
Hi, when we use mphstate to export state-space model, can we know the physical meaning of each states? Any help is appreciated. Thanks
View ArticleTime to Reach Steady State in a Diffusion Problem
Hello, Is someone able to help me, please? I'm using COMSOL to model a diffusion problem. I have solved it using the stationary solver. I am able to see that at steady state the concentration on the...
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