Coupling Electrostatic, Structural and Acoustics
I am currently trying to couple 3 different physics for my electrostatic transducer. The coupling works in the following mode: Bias or static mode and time harmonic / frequency response mode. For bias...
View ArticleJob option in Batch command
Hi all, I add trouble when using the batch command recently. I prepared one file with a parametric study (different amplitudes are used in a time dependent problem). I didn't try yet the -pname and...
View ArticleError - 3D LID Driven Cavity Flow
Hello Forum, i try a computation for the "3D lid-driven cavity flow" model. I got a Comsol Error: Failed to find a solution. Divergence of the linear iterations. Returned solution is not converged. I...
View Articleline integration of scalar field for use in study, not as result
hello, i am having great difficulty figuring out how to use a line integral inside of a study. for example, i am seeking to use the line integral of a temperature field (1st interface) across a line in...
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 Article2 Separate Stranded Coils in Multi-Turn Coil Domain
Hi all, I have 2 separate stranded coils to be modeled for transient behavior (Current Pulse input). Since these coils are not of regular shape (linear or Circular), i had to go with numeric coil type...
View ArticleCUDA and COMSOL
Dear all, I have a new NVIDIA Quadro GPU and I would like to use it to accelerate my simulations, is it possible to use it somehow? I looked for some informations and it seems to me that CUDA it's...
View Articlewhy it is different between Axial 2D and 3D in Non-Newtonian Flow.
Hellow, i have used this for about 2 weeks. but i have some problems. so i need some help. i drawn a model of the cylinder which is same both them. and they are same values, boudary conditions... but...
View Articlesmart parametric sweep?
Hi, I was wondering if in Parametric sweep it is possible to update Study Settings based on the up-to-date results of the computation (i.e. based on the results computed from the previous step of the...
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 ArticleProblem to converge a Reaction engineering, Diluted species transport and...
I want to degrade one component in a 3D geometry along with diluted species transport and laminar flow in it. My simulation runs okay in stationary study (i used step function here). But when i want to...
View ArticleNew to COMSOL - Issues with Modelling a MEMS Coated Micromirror (2D)
Hi, I am new to COMSOL software, however I have started building a 2D model of a MEMS Micromirror with a thin film coating of SiO2. My aim is to match experimental results regarding the radius of...
View ArticleComments on an old topics
Dear Ruud, I have a question about one of your reply on an old topic:www.comsol.es/community/forums/general/thread/16346/ I also want my solver to use the previous result to calcule the next one, but...
View ArticleTwo electrodes, four layers
Hi everyone! I am trying to do simple model using 3D Comsol Multiphysics // AC/DC module // Quasi Statics, electric // time harmonic analysis ... two electrodes, 0.5V and -0.5V, four skin layers with...
View ArticleSimple 2D model
Hi everyone! I am new around here and I have to solve this problem: I have to model human skin with two electrodes on top. Skin has 4 square shaped layers, different permitivity and conductivity....
View ArticleGhost domain, bug?
I have a curious problem with Comsol (4.3b and 4.4) with ghost domains. If i look at the geometry and select all domains, i have, ie 10 domains. When assigning materials, then the 11th domain appears...
View Articlecomb drive actuator
I am trying to simulate a basic comb drive actuator in comsol. The electrostatic force in y-direction is coming negative,although it should come positive. Kindly help me out as soon as possible. I have...
View ArticleEffect of magnetic field on vibrating cantilever beam
Hello everyone, I'm a new user and I am currently facing a problem on simulating the effect of magnetic field on vibrating cantilever beam. My model will include placing one permanent magnet on each...
View ArticleEffect of magnetic field on vibrating cantilever beam
Hello everyone, I'm a new user and I am currently facing a problem on simulating the effect of magnetic field on vibrating cantilever beam. My model will include placing one permanent magnet on each...
View Articlecomsol error failed to evaluate variable
Hi, i am trying to design spiral inductor using the physics "magnetic and electricfield(mef) but i have this error Failed to evaluate variable - Variable : mf.normB - Geometry: 1 - Domain: 2 3 4 5 6...
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