Local coordinate system for material properties
Dear all, we are trying to do an eigenfrequency analysis of a car tire and are struggling with defining the correct elastic material properties for the tire plies. The tire plies are fibrous composites...
View ArticleA time-dependent Free molecular Flow study
Is it possible to do a time dependent simulation incorporating free molecular flow physics in a reasonable amount of time. A stationary study is pretty fast to converge, but the time dependent study...
View ArticleCooling Towers
Can we input humidity for simulating cooling tower on COMSOL 4.3a? Can you help me with amy examples, if any??
View ArticleShallow-channel approximation with wetted wall in Laminar Two-Phase Flow
Hello, in earlier versions of COMSOL (eg. 4.1) it was possible to define a wetted wall boundary condition simultaneously with shallow-channel approximation in the two-phase flow physics. However in...
View ArticleParticle Tracing in Fluid Flow
Hi all, I want to simulate particle laden flows considering coupling between both- the particle and the fluid phases. I'm currently using the following two modules: Laminar flow(spf) and particle...
View Articlesimulation of rectangulaire straight conductor
Hi everybody, i want to simulate a straight conductor wire to find the magnetic field B and the inductance of the wire so i used the MEF in ACDC module so i defined the begining of the wire to terminal...
View ArticleHigh Viscosity in Two Phase Flow
Hi, I have constructed a two-phase flow model, using the "Droplet Breakup in a T-Junction" model in the gallery. I managed to compute the default model successfully. However, when I change the...
View ArticleMagnetic Force on an armature
Hello I'm dealing with a very simple problem that has been very frustrating for me! I would appreciate if any one can assist me with that. I'm modeling an E-shaped core in 2D magnetic field module. It...
View ArticleHow to calculate photonic band gap, transmission and reflection spectra?
We want to get photonic band gap, transmission and reflection spectra of 1D or 2D PC. Could you help me how can I obtain band gap and Transmission/Reflection spectra of 1D or 2D photonic crystal? Or...
View ArticleSurge impedance of transmission tower
Hi everyone. I am trying to model an overhead line system, in which the transmission tower should be defined as a surge impedance. I expect the wave will go down the transmission tower and get...
View ArticleSimulation of Stirling Engine
Hello everybody I'm currently trying to simulate the fluid flow in a stirling engine (beta) which I've built from the following video:www.youtube.com/watch?v=X2qssmxA82U You should try building it;-)...
View ArticleHow to define a acoustic point source
Hi all, I have a problem with Comsol. I defined a point source from 1m away from a acoustic lens, but it seems that there is no convergent behind the acoustic lens. Normally, if I use a plane wave as...
View ArticleCooling of a liquid inside a tube
Hi, all I want to model the cooling of a liquid metal inside a tube flowing under laminar conditions. Specifically I want to calculate the variation of the Nusselt number on the tube wall during the...
View ArticleMoving mesh 2D
Hello, I am trying to simulate the moving boundary for a 2D geometry. I started with a simple 2D geometry where 1 boundary is moving in the x-direction and 1 boundary in y-direction, but because the...
View Articlemagnetohydrodynamic model
Hello. I learned that the latest version of Comsol-u is magnetohydrodynamic model. He was someone kind enough to send me this model? Thank you.
View ArticleEigen frequency analysis
hi, i am dealing with a nanotube sensor...can i use eigen frequency study step to find frequency at which displacement is maximum or should i use some other study step..
View ArticleImporting
How can i import a 3D RC model from auto-cad so that it shows all the concrete and reinforcement details.? because every time i import it. it comes to comsol as a solid lacking the reinforcements..
View Articlethermal model
Hi everyone, I am working on a thermal model and used conjugate heat transfer for simulation. My problem is when i want to calculate the thermal efficiency of the flowing fluid (cooling) by identifying...
View Articleautomatic resmeshing
Hey, I tried using the "automatic remeshing" feature in the new version of COMSOL (4.3) and it repeatedly gives the error as "intersecting mesh elements" . Please help me resolve it. Besides, I am not...
View ArticleSetting up a previously solved physics as an initial condition for a second...
I am new to COMSOL 4.3a and I have what seems to be a simple dilemma, but I can't figure it out. I have a model incorporating three different physics. I want to run COMSOL to solve for the first...
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