Frequency domain analysis
Hi to all. I'm trying to perform an EIS with a 2d-axial revolution model. The model is composed of TCS-FP and second current distribution but when I try to activate the FP and TCS in the Frequency...
View ArticleHow to remove a subdomain?
Hello, can anybody tell me how to remove (delete) a geometry (subdomain) out of my model? Tank you!
View ArticleSimulation of Nickel-Titanium Alloy with Nano Ferromagnetic Particles in it...
Dear All, I want to simulate Nickel-Titanium Alloy (Nitinol) with Nano ferromagnetic (Metglas Nano Finemet 50 Hz NoFieldAnnealed) particles embedded in it to observe its shape memory effect. Different...
View ArticleApplying displacement on imported mesh node
I have imported a Tetrahedral mesh file from nastran. Need to apply a nodal displacement vector on the mesh. But not able to select a nodal point in the mesh. Please help.
View ArticleTrying to model contact in two phase moving mesh
Hi, I am trying to model contact in a two phase moving mesh problem. The model I am having most problems with now consists out of four geometries of ABS plastic at elevated temperature, which I am...
View ArticleUnable to evaluate an expression
Excuse me, I am getting an error as Attempt to evaluate real square root of negative number. Function: sqrt Failed to evaluate expression. Expression:...
View ArticleWhy time mesh have a color stipe?
As see from the attachment, i just want to get the blue curve. But a color stripe, mayebe a interference from caculation? How could i eliminate it?
View ArticleMeshing a big thin volume (~2.5 mm x 6.5 mm x 14 um)
Hi all, I have being simulating the capacitance between different pads/terminals between CMOS chips assemblies for the last year without a problem. Usually, these pads are 20 x 20 x 4 um and the chips...
View Article3D Modelling with rotating part
Hello everyone, I'm new to COMSOL but recently took the intensive 2 days course. I am having some issue with my modelling using COMSOL 4.4 and it would be great if you could help or point me to the...
View ArticleProblems With Converging due to a solution dependant material property
Hi all, So I have been trying to get COMSOL to solve me a system using the electrostatics module. I have found that my model does not converge when I add my own permittivity model in. Usually...
View Articlesimple question: Connect feed to resonator cavity
Hi! I'm new with comsol and I have a simple question: How can I connect the coaxial cable in figure with the resonator cavity? Thanks
View ArticleProblem with moving mesh
Hello I'm trying to build a 2d-axis model of laser heating process, which will melt the powder bed. The free-surface will deform according to the surface tension and mass loss due to vaporization. Here...
View ArticleHow can I perform 3D_curve_points projection on a 2D plane?
I calculate the pressure in some discrete points along a complicated geometry curve. The combination of the following tools brings me the pressure values. 1) Edge_3D (which is selected from the...
View ArticleProblem with S11 parameter
I created in Comsol a resonator cavity with a feed (in the picture) that works at GPS frequency (1.57 GHz). When I try to extract S parameters I don't understand the behavior because the values are...
View Articlecylindrical resonator cavity with coaxial cable
Hi! Can anybody help me making in Comsol a cylindrical resonator cavity with coaxial cable as feed with a little extension of inner conductor to couple energy inside the cavity? I’ve tried to make it...
View ArticleError with finer meshes
Dear, My program which is about the solution of some diffusion and reaction equations in a cube works very well for coarser and extra coarser meshes, however when I repeat the analyse with finer...
View Articledesign multilayer coil for wireless power transmission
hello, i am new in COMSOL please can somebody tell me how to design any multilayer coil in comsol as 3D. Actually i need that for my project Thanks
View ArticleLaminar flow and automatic remeshing on fold up edge
Hi all, I'm working with this model since a long time, but I cannot make it works fine. I'm simulating a model in which an external pressure acting on a limited area pushes on a viscous liquid that is...
View ArticleConnect coaxial cable to a cylindrical cavity resonator
Hi! I need to connect a coaxial cable not on the two parallel face but on the straight line (as you can see in the picture). I have tried to make a hole but it doesn't work, anyone can help me? Thanks...
View Article3D Meshing, "Internal error in boundary respecting"
Hello everybody, I try to mesh a 3D model, that I´ve imported from a CAD file with a lot of cylindrical parts and narrow spaces between parts. At the beginning I got an intersecting error, so i made...
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