meshing-specific domain separation
Hello! I have some trouble with a model in which some domains are subdivided based on a parameter. This is necessary to create a nice mesh. However, when I change this parameter some of the subdomains...
View ArticleHide internal edge from the mesher
Dear all, I have a 2D geometry similar to the one shown in the attached file. I need the domains D1 and D2 to assign different fluids in each region. My problem has to do with inner edge E....
View ArticleTrouble with meshing/geometry
Hello everybody, I would like to ask for some help with my model. Basically, I have a parametric curve which is then revolved to form a spherical shell. The parameters of the curve will later be...
View ArticleBuild 2 meshes
I try to do a simulation of a structure containing a small defect, so I would be led to build two mesh, a normal mesh for the large structure, and between finer for the defect, I managed to do it, but...
View Articlemodelling end inductance and end resistance of an induction motor
Hi, I am trying to model end winding resistance and end inductance of an Induction motor using electric circuit interface. My model works fine and produces good results when I keep only resistance with...
View ArticleNeed help specifying domain and mesh.
Hello all. My model is simply a cone with the pointy end smoothed out by making the tip a hemisphere--I set this up with the 2d axially symmetric setting. I want to create a box (Domain I think is the...
View ArticleMesh Refinement Study
Hello all, I know the basics about meshing, refine the mesh until some metric changes to within a certain tolerance. However I have some questions regarding some more complicated (at least they are to...
View ArticleModeling of busbars
Greetings to the whole community, I am currently working on the simulation of a busbar (made of three parallel drives). But I can not get good results (my expected results are different from those...
View ArticleError in multiphysics compilation/Problem setting up multigrid
Hi, I got error message from Comsol v5.2. I attached. I am working with electric currents, heat transfer and semiconductor modules. Can anyone help me? Any ideas? Thanks,
View ArticleMeshing a 3D model from a 2D mesh.
Hi! I'm working on a project that uses a 2D model as base of the 3D, using the Wave Optics Module. I'd like to import the 2D Mesh in my 3D model, modeling first a 2D plane. From this plane, I'd like to...
View ArticleChanging the default equation in level set model
Hi, I was exploring Level-set method for 2 phase laminar flow and wondering if I can change the default equations according to my wish. If yes, how can I change the equation in pressure boundary...
View ArticleToneburst signal
hello, How could I create a toneburst exitation signal or a simple sinus exitation wave signal in comsol 3.5a? Thanks
View ArticleFSI with solid contact in the fluid domain
I've been trying to simulate a simple problem of a sphere moving in a stagnant fluid domain. The sphere come into contact with a solid object and deforms. Problem #1) In any contact problem, the gap...
View Articleextract values of plot to datasheet
Hello I am simulating a fluid that circulates through a cylinder, to do an analysis of the mesh, I want to measure the temperature through a line that crosses the section (temperatures in the nodes of...
View ArticleMixing two fluids with static mixer
I'm attempting to model two fluids mixing through a static mixer. I'm using two Laminar Flow physics for each fluid and the Transport of Concentrated Species to get an idea for when it's fully mixed by...
View Articleview cross section mesh
I need to see the mesh of an inner element of a cylinder, then I want to make cut in longitudinal section, how can I do it. Thank you
View Articlemesh order
Hello good, I am modeling the flow inside the half cylinder which there is an element inside that we want to cool, the cylinder has a thick part, in total we have 3 domains, to make the mesh I use one...
View ArticleRandom function independent of mesh
I'm running a time-dependent simulation using the general form PDE interface. I have to assign random numbers for my initial condition. Since the random number generator in COMSOL takes the spatial...
View ArticleBuild mesh (help)
Hello good, a doubt about meshes, to have if someone can help me. I have a doubt. I have created a model with three domains. When I create a mesh and select user controled mesh, it automatically...
View ArticleMagnetic field measurement without electric current
Dear sir, I want to measure the magnetic field of simple one sided magnet whose arrangement and position from the middle sketched box will be 0.5cm which is shown in file attached(magnet position is...
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