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Issues building a simple 3-D geometry with COMSOL Kernel
I am building a single foam unit cell, you can see the attached file, and am having an issue where a surface is not being deleted after differencing several geometries. When I use the CAD Import Module...
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boundary condition
hi i am new to comsol in acoustic module i want to creat a medium with infinit boundary (like open space) filled with some material and then stimulus from any one boundary how i can do this
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How to determine when a Particle hit/touch a boundary in Particle Tracing Module
I am trying to model particle trajectory using Particle Tracing for Fluid Flow module of COMSOL 4.4. I am using Dielectrophoresis and Electric force. When the particle touch an electrode, I would like...
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how to create geometry with infinite dimension
I am new to comsol and start learning it. i want to design an environment filled with water (like pond). suggest me how to design it.
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Heat Transfer in Solids Transient behaviour
Hello Everyone I am trying to model laser generated acoustic waves in an aluminum disk. Ultimately I plan on using the Thermal Stress physics, but I am starting with just the Heat Transfer portion to...
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Parameter as function of time in time dependent simulation
How do i specify a parameter which is function of time in a time dependent simulation ?? in my case one of the parameter is function of time
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First year engineer
Im using Comsol software for the first time and i'm also being tested on the concepts in Comsol such as what are boundary conditions, (sub) domain conditions , meshs, figures of merit, and such. Can...
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Determining Capacitance between Multiple Conductors
Hi, I have a system with 3 conductors as in the attached image. The first (left) conductor is set to a terminal boundary with V = 1. The second (right) conductor is set to a terminal boundary with V =...
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Influence of SF6 gas pressure on Electric field
Hello! I am trying to simulate the effect of having SF6 gas at 5 bar pressure in a chamber. However, I do not see any effect of gas pressure on electric field i.e., whether SF6 gas is present at 5 bar...
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Shorting one end of three cables
Hello, I want to simulate the experiment I do in the lab. I have one ends of 3 cables energized from 3 phase source while the other ends are shorted. I am running 2D simulation, therefore, does anyone...
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Problem current modelling for ring core inductor (axialsymmetrical)
Hello, I am trying to model a ring core inductor. For the winding I do not assume discrete turns but a kind of toroid with the ring core within the toroid. In this way I can model the inductor in 2d...
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Calculate Electric Fields from Magnetic Fields Single-Turn Coil?
Hello all, This is my first post here. I'm relativly new to Comsol, but have been working with it for a couple months now. I've extensively used the Single-Turn Coil capability in MF, but am now...
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Magnetic induction
hello, I am a newbie of COMSOL. I am trying to simulate magnetic induction with RF frequency between two metal rods. I am fail to induce a current, Can someone kindly give me some advices? Details are...
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Shear stress boundary condition
Hi, I am trying to solve a simple fluid flow problem. It involves marangoni effect. But, I want to make it simple and apply shear stress as the boundary condition, instead of solving coupled thermal...
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Thermocapillary recirculation
EDITED Hello, I am a beginning user of COMSOL. Currently, I am trying to create a preliminary model of Marangoni convection, like this one available on the COMSOL site:...
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Electromagnetic waves
Referring to the microwave oven model from the model library, the E0 vector was set as cos(pi*y/dg)[V/m] at the z direction. Could anyone please explain to me how was that set, as i'm changing the...
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Polymer swelling
Hi, I'm Amnani. I am a newbie in COMSOL.. Anyone here knows about polymer swelling using COMSOL? It is great if there are some model examples that anyone can share. Thanks.
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why velocity of fluid is constant over the entire field?
hi everybody, i have a simple heat exchanger. please suppose a pipe which in the middle of it there is a heat source. the fluid pass around it. i use U constant at z axis velocity and outflow boundary....
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Catching errors in parametric sweeps
Dear all Is there an elegant way to catch errors in large parametric sweeps? E.g.: When varying values of parameters one might well reach a point when convergence (or other) problems are encountered....
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Convergence versus meshing granularity
I have noticed interesting behaviour in my models. If the model will solve using a coarser mesh, it may not solve well using a finer mesh. And although use of the boundary layer tool can reduce the...
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