How find out 'Global equation' under Electromechanics module....
Could anybody please tell me how to add global Equation from Electromechanics module in 4.3 b.it supposed to be showing according to the example of simple mems resonator.But when I was working with...
View ArticleDiffusion problem with sharp edge
Dear all, Using the 2D general PDE form within COMSOL, I'm trying to solve four coupled differenial equations, in order to obtain the velocity profile of an magnetohydrodynamic flow. One PDE for the...
View Articlemass balance
Hello I am a user of Comsol 4.3b. I have a very simple geometry of some channels. I just need to see the flow distribution between different channels. The flow is laminar and the boundary conditions...
View ArticleStrange Mesh Behaviour when coupling Laminar Flow and Moving Mesh (ALE)
Hi all, I want to simulate the convergence of tectonic plates and the resulting uplift of material at the plate boundary. The model is set up as follows: The left side and the left half of the bottom...
View ArticleEarly Bird Abstract Deadline *Tomorrow* June 21st: COMSOL Conference 2013 Boston
Dear COMSOL users, Tomorrow is the Early Bird Abstract Submission Deadline for the COMSOL Conference 2013 Boston. Do you have any work using COMSOL you would like to present? Already I have received...
View ArticleALE moving mesh + electrostatics force calculation are in conflict
Hello Everyone, thanks for all the support or tips you may give on the following problem. I am trying to couple three different modules, to monitor the displacement of a bubble in a channel in 3D under...
View ArticleAsymmetry of Electric Field Streamlines
Good afternoon all, I'm currently working on a project involving the electrostatic potential between two electrodes. Once computed and rendered, the electric field lines show an asymmetry in their...
View ArticleSeparating Electolyte in Anodization simulation
While doing anodization simulation (using Electrodeposition deformed geometry of Electrochemistry module) how can we make the sample (to be anodized) different than electrolyte because in this...
View ArticleAccessing material properties in global expressions
Dear Comsol users, I am struggling to use material properties in global expressions. I am working with the RF module and using the Electromagnetic Waves/Scattered harmonic propagation application mode....
View Articleliquid loading
I'm a beginner level COMSOL user and new to this forum. So please excuse me if I happen to ask a really silly question. I've been trying to simulate the behaviour of a piezoelectric crystal upon...
View ArticleAcoutics Module
I am trying to model a sound source (speaker, just a "power point source" now) in a sphere and prove that the sound is concetrated in the center of the sphere. Then I want to add sound treatment to the...
View ArticleGetting electric field data at a certain coordinate point in the geometry
Good afternoon, I'm working on a project involving the electrostatic potential between two electrodes. I'm interested in knowing the quantitative data of the electric field (along with data from other...
View ArticleAnisotropic simulation of a boat
Hello, In our project we're simulating the warpage of a bost we're building, using a composite of fiber glass and resin. For the simulation we're having problems mapping the surface because of the...
View ArticleInduction heating electromagnetic equation
Hi, i'm looking at the electromagnetic equation on the induction heating domain and I'm wondering about the terms multiplied by the potential vector. From which equations do they come? I attached a...
View ArticleHeat transfer_heating a nanoparticle
Hello guys I'm trying to get thermal distribution of nanorod(gold) which are placed inside the sphere(water). I designated nanorod as a heat source and simulate the heat distribution near nanoparticle...
View ArticleMass flow unsymetric matrix error
I am trying to do simulation of turbulent flow through a valve. I have a problem that the pressure variable seems to become unsymetric as soon as I have flow through the inlets of the valve. I am able...
View Articlehow i can make a permanent a magnetic field
Dear all, how i can make a permanent a magnetic field licke a picture. best regards Viktor Reising
View Article2 weeks left until the Early Bird Abstract Deadline for the COMSOL Conference...
Dear COMSOL users, The Early Bird Abstract Submission Deadline is getting closer! Do you have interesting modeling work that you would like to share with others? I'm curious to see what you have been...
View Article2D model coupling
I want to couple two 2D models, the first models computes a stationary state and the second should use the result to compute a time dependent model. I thought that with identity mapping I could read...
View ArticleSimulation of composite laminates
Hi all, Do you have any idea of modeling (simulation) of laminates , e.g. bi-layer composites having layers with different elastic modulus avoiding the so called 'free edge effect' (a stress...
View Article