Synchronous machine (torque)
Hi, I am new to COMSOL. I am tryng to build three phase synchrnous machine model. I have applied three phase voltage to the machine but unable to generate torque in a machine, I do not waht is wrong...
View ArticleIs it possible to couple two modules?
Hi, I am simulating an open water channel (0.31m x 6m x 0.4m width, large and height) with k-e turbulence model. The boundary conditions are: walls and floor as wall function, upper boundary as open...
View Articlecurve cylinders
How can I draw a system of curved cylinders intertwined to form a portion of capillaries?
View ArticleMeshing in 3d geoemetry
Hi ! I am trying to solve non prismatic electrostatically actuated beam using COMSOL. I am finding very difficult to do mapped mesh since the geometry is having curvatures which is enclosed in a box....
View ArticleHeat Transfer through 2 physics / Coupling 2 physics
Hello! Im trying to figure out how to couple the modules "Heat Transfer in Solids" and "Heat Transfer in Porous Media". I made a simple example. Two blocks on top of each other. On Block has a heat...
View ArticleExtracting data during simulation for each iteration
Hi, In my model, I want to have the amount of pressure at specific grid points (1D model) at each iteration, and use this value to manipulate another variable which is used in the next iteration. I was...
View Article1 Week Early Bird Reminder: Submit your work at the COMSOL Conference 2013...
Dear COMSOL users, We are 1 week away from the Early Bird Abstract Submission Deadline! Do you have any work using COMSOL you would like to present? Already I have received some interesting and...
View ArticleUsing dependent variable to calculate a material property
Hi, I am rookie when it comes to comsol but I have simple question. I would like to use a dependent variable (potential) to calculate a material property ( such as density of states). So for each...
View ArticleVibrating horizontal plate.
Good Evening everyone, I have a really simple question, I'm sure someone knows the answer to my problem. I'm trying to make a model of a plate, platform, anything you want to call it, that vibrates...
View ArticleContact problem. Static vs Dynamic
I have an impact model; steel presses down soft tissue. I can solve this model in static analysis with prescribed displacement. But when I solved the model in dynamic analysis with prescribed velocity,...
View ArticleImpulse Response of a simple structure
Hi everyone, I would like to simulate a simple structure under the action of an impulsive force. The structure is a free-clamped cantilever, where the impulse force is applied at the free end. The...
View ArticleFrequency-Domain, Perturbation
Dear all, I'm simulating impedance spectra on a newman type lithium ion battery model. I use one single solver Step: Frequency-Domain, Perturbation. There is one single "Electrode Current Densitiy"...
View ArticleResonant frequency +set stress and temperature
How way I will find resonant frequency my structure? I use to Structural mechanic modul, then Solid mechanics and then Frequency domain-Modal or Eigenfrequency? I need to specify these parameters:...
View ArticleLight Propagation in Tissue
i just want to simulate the propagation of monochromatic light (800nm) in a 3 Layer tissue model 3D. Does anyone know a working Comsol solution? Problem: to many elements with this wavelength. Setup: 3...
View ArticleMoving mesh problem with two concentric circles (Li-ion)
Hello, I am using Comsol Multiphysics 3.5a. I am modeling a problem involving three models, Solid Stress-Strain (including thermal expansion), PDE General Form and Moving Mesh (ALE). My geometry (2D)...
View ArticleInduction Heating efficiency
Hi, is it there any way to calculate the efficiency of an induction heating process using comsols?
View Articlefrom 3.5 to 4.0 or later">"Integration coubling variable" -> from 3.5 to 4.0 or later
Hi, In COMSOL 3.5 or earlier, for "Integration coubling variable", one could go to option -> Integration coubling variable -> subdomain/boundary/ point variable. Can anyone tell me how can I do...
View ArticleHow to simulate particles trajectory under dielectrophoretic force
Hi all, Now I'm trying to trace the particles under dielectrophoresis(DEP) and laminar flow. I could apply DC but I can't apply AC. I can't make correlation among AC, laminar flow and dielectric force...
View Articlesetting mass flow rate at inlet
Hi, Model description I have a 3D laminar air flow inside channel whose cross section is rectangle. for BC , 1- the inlet , mass flow rate boundary is set (kg/s), 2- the outlet , zero pressure p=0 pa...
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