Connect Simulink With Comsol 4.0
Hi: I designed a transformer in comsol 4.0. Now I need to connect a voltage source from simulink to this model. How would I go about that? Thanks PJ
View ArticleSimulink/Comsol
Hi: How do I export a comsol (v4.0) model to simulink(Matlab 2009)? Where do I begin? thanks PJ
View Articlelake's hydrodynamic
Hi, I have imported a lake's dem to study circulation and hydrodynamic, but i don't know how i can work with it. Can anyone help me????
View ArticleHow to build a moving geometry???
Hello everyone! I am using Electrodeposition Module. The anode of geometry is moving as the time goes, and the moveing anode is Piecewise function. ( The physical field is Electrodeposition,Tertiary...
View ArticleCalculate overlap between two different models ( so 2 different studies)
Dear All, I am trying to calculate an overlap between two optical modes (2D), while sweeping a parameter in each model. For example lets imagine you want to calculate the overlap between two different...
View ArticleProblem with changing a Multi-Turn Coil from a rotating body to a CAD Import
Hi @ All, i have created a model with a Multi-Turn Coil (rotating body). Now i try to exchange the rotating body with a CAD Model (looks like a 4 rectangular tube), but i can't define a Input Boundary...
View ArticleImport 3d geometry from x,y,z data matrix
For my simulations I am trying to import a 3D geometry which I calculated in Matlab to Comsol. For my 2D simulations I used a interpolation curve with the datapoints from a csv file. For my 3D...
View Articlenumerical derivatives
Dear pros, this should be simple, yet I have not succeeded in implementing this in COMSOL and could not find any relevant instructions anywhere. I use COMSOL to process experimentally obtained and thus...
View ArticleGeometry construction
Hi! I'm trying to solve a geometry problem for my model using Matlab Livelink Comsol. There is a "loop" using "for" to create multiples lines (BezierPolygon), but the program returns just the last line...
View ArticleHow to "intercept" transient solution at every time step
Hi all, I have a coupled set of PDEs that are being solved over time. At every time step, i need to check for a condition, and if it is satisfied (elementwise), raise a flag and start counting that...
View ArticleConnect Simulink With Comsol 4.0
Hi: I designed a transformer in comsol 4.0. Now I need to connect a voltage source from simulink to this model. How would I go about that? Thanks PJ
View ArticleSimulink/Comsol
Hi: How do I export a comsol (v4.0) model to simulink(Matlab 2009)? Where do I begin? thanks PJ
View ArticleHow to extract the stiffness Matrix for a certain element?
Dear all, Hi. I need to extract the stiffness Matrix for a certain element or node before assembling. The "mphmatrix" command gives me the results for whole geometry (After assembly). I wonder if there...
View ArticleDoes COMSOL support user-defined element like Abaqus does?
Hi all, Anyone knows if COMSOL support user-defined element like Abaqus does? I am now using eXtended finite element method(XFEM), in which, the elements cut by the interface are enriched, so there are...
View ArticleProblem with changing a Multi-Turn Coil from a rotating body to a CAD Import
Hi @ All, i have created a model with a Multi-Turn Coil (rotating body). Now i try to exchange the rotating body with a CAD Model (looks like a 4 rectangular tube), but i can't define a Input Boundary...
View Articleoutputs from mphgetu and mphmatrix
Hello, I'm looking at a time-dependent 1D 'Coefficient Form PDE' problem. I mesh the line with 4 element (5 nodes). So I have 5 degrees of freedom, the relevant system matrices are also 5x5. Also to...
View ArticleDrift Diffusion and Heavy species transport coupling
Hello I am modelling an AC-DBD plasma actuator (model is attached). I have modeled my time-dependent ac circuit and have proceeded to include the drift diffusion model and heavy species transport...
View ArticleEquation in matrix form for use for MATLAB Livelink
Dear all, This seems to be a pretty simple question but I am struggling to find any help on the topic! I have recently started using COMSOL with the livelink to write a Model Order Reduction in MATLAB....
View Articlempheval() along Boundaries
I am using the Magnetic Fields no Current module and am trying to extract the H field along a boundary between material A and material B using mpheval. What I am finding is that Comsol is returning an...
View ArticleUpdate variable at the end of each timestep
Hello everyone, I was wondering if there is a solution for updating variable at the end of each timestep without using LiveLink for MATLAB. For example, if I want to modify the parameter A, at the end...
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