Mesh, with Free Triangular and Swept, and different sizes for different parts
Dear all, I have a problem with the mesh I am using, and I wonder if someone could help me out here. I'll try explaing it using the attached files, I apologize for the length of this post. The file...
View ArticleSimulating a Wind turbine blade
Hi i want to perform wind flow simulation over a wind turbine blade using COMSOL. Can anybody help me by giving me some suitable tutorial , because had not use any other module except MEMS and fluid...
View ArticleA SMALL DOUBT ON PORT POWER VALUE !
Hi all, I am new to this software and I am trying to simulate a multi-layer structure on which plane electromagnetic wave is allowed to fall at normal incidence. I kept the port power at the default...
View ArticleFailed to evaluate variable Jacobian
Hi, i'm trying to simulate a capacitive pressure sensor which have two parallel square plates using the electro mechanics physics. I have given terminal 12 v to the top plate and ground to the bottom...
View Articlesolver - direct mode
Hi, Can anyone please tell me how to change the solver to direct mode?
View Articlewhere is an example model with the adaptive mesh refinement?
Hello, does somebody know a model with AMR to use as an example.. I have a lot of problems. I do not understand the settings.. Arrigatou
View ArticleCANTILEVER VIBRATION ANALYSIS
I want to create a cantilever with 1000um, 100um and 10um length, width and thickness respectively. i want to fix one end and analyse its displacement by giving varying force at the free end. please help.
View Articleli_ battery _1d_for_thermal_model
Dear sir or madan, I got a question when modeling a layer-structured liion battery consited of 2 cells connected in parallel. is the "li_ battery _1d_for_thermal_model" only designed for the...
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Re: problem in apply the numerical flux in PDE
Hello, (This discussion refers to paper in www.comsol.com/paper/3d-simula...ion-in-a-squid-giant-axon-7317) Perhaps I'm mistaken, but I think that there is an error in the paper. For me, it would be...
View Article4-Coil System
Hi all, I am new in Comsol and I'm trying to model a 4-coil system consisting of Source coil, Transmitter coil, Receiver coil and Load coil. Basically, there will be a voltage source supplied to the...
View ArticleFrequency Response Function
Dear Ivar Kjelberg This question has troubled me some days, I hope you give me some advises. A cantilever plate: the length 300mm, the width 200mm, the thickness 6mm; The clamped end dimension: the...
View Articlewho can tell me why the magnetic force different?
I did a simple simulation in 2D or 3D, which include a block of soft magnetic material and a block of permanent magnet. I want to verify the force on soft magnetic material equals the force on...
View ArticleCAD import and meshing error
Hi everyone, I am trying to import a .sat file to COMSOL. Even though in the CAD-programme (Rhino) I am able to form a union, it fails in COMSOL. If I simplify my model, so that the union works, the...
View ArticleMatching simulation results with experimental measurements for a simple heat...
Hi, I am trying to model a simple heat transfer problem with laminar flow. My 3-D model has a silicon block with 1W power source at the bottom. At the top of the Si-block, liquid is flowing at a...
View ArticleCOMSOL with Matlab syntaxis (plotting and extraction datas while optimization...
hello. I'm trying to make belows these days. First, I've opened a 'Topology Optimization of a Loaded Knee Structure' from the model library that is aleady exist. And I clicked 'reset history' then...
View Articletransformer model
Hi everyone, I am very new to COMSOL, thats why I ask for so basic things. I am going to do simply transformer model with radiation. Firstly I did the model in Inventor. But i have many errors during...
View Article3.5a and 4.2
Hi to all, I am trying for the first time the new version of COMSOL, while until now i could work only on 3.5a. I have to do a multiphysics simulation including heat transfer and fluidodynamics. The...
View ArticleNo change in laminar flow simulation results even after changing material...
Hi, I have been doing very straight-forward and simple laminar flow simulations in a chamber. I have observed that flow simulation results don't change if I add and use another fluid with different...
View ArticleMoving surface charge - pzd model
Hello I tried to build a simple test model of an oscillating surface with an applied surface charge (with pzd model). The solution shows that the surface oscillates correctly (displacement plot). But...
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