Electromagnetic simulation considering magnetic and electric effects
Hi, I've been trying to model a grounding system submitted to a current impulse on time domain. I can simulate that situation employing the Electric Currents physics from AC/DC module. However, that...
View ArticleCouple 3 different physics, heat transfer, fluid flow and solid mechanics
Hi everyone, I am new to this forum and I am learning the software, but I have solved some examples. could anyone help me, or show me how to couple 3 different physics: heat transfer, fluid flow, and...
View ArticleHelp with Periodic Boundary Conditions
Hi,I'm trying to model a 20-turn toroidal inductor with a rectangular cross-section, using the mf interface. I'd like to measure the induced current flow and potential drop across the inductor due to a...
View ArticleCompressive modulus of a porous aluminium block
Hii I am trying to find out the compressive modulus of a porous aluminium block. But unfortunately i am getting the same result for porous as well as solid.Could you help me in this regard.
View ArticleInlet flow boundaries inside the domain
I would like to evaluate the air flow inside an ice rink. So I try to define the ventilation inlet like a boundary surface somewhere in the top of the domain. But the boundaries are inside the domain...
View Article3D Graph from global variables
The below post is related to an archived discussionDear all,I want to creat a surface plot from 3 derived values. It would be something similar to what Jeff did with height expression (in the refernce...
View ArticleDye Sensitized Solar Cell Simulation
In The Name Of GodHello my friend;How can I simulate dye sensitized solar cell in Comsol Multiphysics?Thanks a lot.Asghar Rismanchi.
View Articleshell and tube heat exchanger
how to add the properties of Air domain for shell and tube heat exchanger
View ArticleLeaning Comsol
Hello, i just started to learn how to use Comsol and I have a question. I started with a simple simulation: Two steel plates on the top and bottom, some flexible material in between. The top plate...
View ArticleIterative solver, convergence plot outrunning iteration number shown in...
Hello everyone,I have been solving some 3D RF Frequency domain problems recently, using the the default FGMRES solver.I just encountered a weird problem: the solver iteration number shown by the...
View Article3D model with PCM
my model is not showing the phase change what are the reasons for this?
View Article2d axisymmetry to get the Total Harmonic Distortion of a speaker
Hello to all,I have solved for 2d axisymmetry to get the Total Harmonic Distortion of a speaker {Can refer pdf of Transient Analysis of Loudspeaker Driver}. But if I want to find the same for a 3D...
View ArticleHow to define "step velocity"?
Hello to all,Could you please help me to how can I define "step velocity" as in for first 0.5 sec velocity is zero then for next 2 second it is 1 m/s and again zero for next 0.5 sec.?
View ArticleRequest for trial pass code
Hello, I'm new here! I'm trying to determine the liquid flow behavior of textile dyeing liquor which are used for textile dyeing.As a beginner, I have need a trial pass code of version COMSOL 5.0/...
View ArticleHow to sort parameters
Hi,I have been working with COMSOL for a long time now and I realy enjoy many of its features.However, one thing that I really miss in COMSOL is the ability to sort your parameters in groups so not all...
View ArticleConnection to COMSOL Server on a remote server
Hi there,I was attempting to use Matlab/LiveLink on my local computer to a COMSOL Server on a remote server. I managed to start the comsol mphserver there, but when I tried to use mphstart(ipaddress,...
View ArticleSave Auxiliary Sweep solutions?
To help the convergence of a stationary model with a varying stress-dependent elastic modulus, I am using an auxiliary sweep instead of parametric sweep. I would then like to get the eigenfrequencies...
View Articlewelding simulation
can someone suggest me how to model moving heat source for welding problem using guassian distribution.
View ArticleSize of matrix exported from Comsol : understanding?
Deal all,can you explain how to understand the size of stiffness matrix which is exported from comsol,for example i have a 2d cantilever beam, discritized with nel_x x nel_y=20 x 10 => nnode_x x...
View ArticleCOMSOL convergence problem?
I'm running a big CFD problem for gas storage in caverns. Now when I set the final simulation time to 20 days or less, it converges. If I increase final time to 21 days or more I get the message:...
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