CALCULATE HEAT PRODUCED AFTER HAVING RESULTS
Hello, I have a plate that vibrates and I have friction in one point.In my results I can see the stress in this point,the strain,displacement,frictional force,sliding velocity .I want to calculate the...
View Articlemagnetization problem
Can any one let me know what is problem , i am not getting magnetization in the coil , i excited primary coil with the 319 v and want to see magnetization in the coil , i am not able to get the...
View ArticleHow to define a metal in the Eigenfrequency analysis?
Hi, I want to define a metal material (i.e. Ag or Au) in the RF Eigenfrequency analysis. I may defiene by typing in the Drude model, but how can I connect the omega in my equations to the readable...
View ArticleB of H / H of B curves
Hi everyone; I searched and it seems nobody asked it before. In the AC/DC module, in either MF/MEF, there is an option to use a constitutive relation of HB-curve, which gives us |H|=f(|B|). Is there a...
View ArticleNot convergent when the mesh is dense, why?
Dear all, Convergence problem is kinda mysterious... This time convergence is nor reached when the mesh is dense. I would say perhaps too dense in some region. Some coarser mesh leads to convergence....
View ArticleCurvature from surface
Hello everyone! I need to evaluate the curvature of a surface. My problem is the following: 1. I have a semisphere (x,y,z where z is the elevation and (0,0,0) is located on the inner center of the...
View ArticleCAD import Module has stopped working
tried to import solidworks file ( no solidworks in my computer) then the import module crashed following info is presented COMSOL CAD IMPORT MODULE HAS STOPPED WORKING Problem signature: Problem Event...
View Article(Surface) plot of time dependent diffusion equation solved on a 2D- disk.
Hello, I have solved a time dependent diffusion equation on a circular disk. I would now like to visualize the results as a surface, where a one dimensional cross section of the solution (the...
View Articlepiezo-acoustic-ACDC interaction: results not consistent with experiment
Dear All, I am trying to model a buzzer that consists of Al membrane and PZT patch. The buzzer is excited by acoustic wave (given pressure) and is loaded with a resistive load. I cut the geometry in...
View ArticleStabilizing the convective terms in NS Equations
Hello, I an having some difficulties implementing a modification in the Mixture Model. When i am using a solid phase to liquid phase density ration of 2.5, the convective terms in the NS equations...
View ArticleRF module, parametric wavelength sweep
Hi all, I want to plot the curve of effective index as a function of the wavelength in a silicon waveguide. So I use RF module with perpendicular wave and define the lambda0_rfwv to lambda in Scalar...
View ArticleSimple 2D diffusion model
Hi, I am trying to model the diffusion of a concentrated solution (source) through a porous 3-channel device. My right channel is my source channel, and my left channel is my sink channel. I am...
View ArticleMeshing
Hello, I"m looking for good tutorials for showing the method of "user controlled mesh". I cannot find any good tutorial in COMSOL. Please let me know. Thanks.
View ArticleStabilization methods
Hello, How does using stabilization methods like streamline diffusion, cross wind or isotropic diffusion affect my solution.To elaborate, I am solving navier stokes and convection diffusion problem in...
View ArticleParticle tracing - particle counting
Hello to everyone, Im new to COMSOL and currently trying to work with particle tracing for fluid flow. The model we are working on is part of vascular network and we are using as physics : structural...
View ArticlePiezoresistive modeling
Hello all I want to simulate a piezoresistive beam with Comsol. I was looking to find an example of piezoresistive modeling to find out what module they usually use and how are the settings but i...
View ArticleConvergence problem of contact mechanics
Hello, Following the earlier discussions on implementing an algebraic equation into a structural mechanics model, I fortunately got away with writing out explicitly an analytical solution. Thanks a lot...
View ArticleTransport of concentrated species - will the species change the flow field ?
Dear everyone, I am working on one simulation about membrane separation, and I am using "Laminar Flow" together with "Transport of concentrated species". I have one question, will the flux (gas A)...
View Articlehow to load the temperature field to an block as the body resource load?
I want to simulate the defect detection process on the Al block using the laser-ultrasound,and I don't know how to load the temperature field to an block as the body load.Hoping for help,thanks very much!
View Articledouble parametric sweep in comsol 4.2a
Hi All, I was wondering if it is possible to define to parametric sweep solvers under one study? for example changing the velocity and temperature at the same time. thanks ASAL
View Article