Quantcast
Browsing all 25631 articles
Browse latest View live

CAD import Module has stopped working

tried to import solidworks file ( no solidworks in my computer) then the import module crashed following info is presented COMSOL CAD IMPORT MODULE HAS STOPPED WORKING Problem signature: Problem Event...

View Article


RF module, parametric wavelength sweep

Hi all, I want to plot the curve of effective index as a function of the wavelength in a silicon waveguide. So I use RF module with perpendicular wave and define the lambda0_rfwv to lambda in Scalar...

View Article


Simple 2D diffusion model

Hi, I am trying to model the diffusion of a concentrated solution (source) through a porous 3-channel device. My right channel is my source channel, and my left channel is my sink channel. I am...

View Article

how to load the temperature field to an block as the body resource load?

I want to simulate the defect detection process on the Al block using the laser-ultrasound,and I don't know how to load the temperature field to an block as the body load.Hoping for help,thanks very much!

View Article

double parametric sweep in comsol 4.2a

Hi All, I was wondering if it is possible to define to parametric sweep solvers under one study? for example changing the velocity and temperature at the same time. thanks ASAL

View Article


Urgent : Boundary layer meshing problem

Hi, I need a help to understand the boundary layer meshing in COMSOL. I have an axisymmetric model of a simple cylinder of diameter radius 6 mm. For the penetration depth of 0.14 mm at the outside...

View Article

How to set a port BC inside PML layer

Hi, I first appreciate your time in this discussion. The problem I got seems very common. It is about the relationship between port BC and PML. I use a rectangular waveguide as the antenna. One face...

View Article

2D Flow past moving cylinder

Hi, I'm trying to develop a 2D model inspired from a model library (Flow past stationary circular cylinder). I want to define the displacement of the cylinder in y-axis with sinusoidal force...

View Article


how to read 3d graph..

I have attached the screenshot of a pressure graph.please let me know what the x,y and z axis represents.

View Article


surface plasmon resonance on channel waveguides

hi, I m working on spr based channel waveguides for biomedical application. can anyone pls tell me the tutorial links of modelling spr in comsol as i couldnt get any.

View Article

surface plasmon resonance on channel waveguides

hi, im working on SPR based channel waveguides for biomedical applications using comsol 4.2 a. can anyone pls suggest me any tutorial links of spr using comsol since i couldnt find any.

View Article

sinusoidal function

Dear all I have to use a sinusoidal function [e,g X0+(X1*(cos*(w*t)))]. Where and how can I write it? rgds Anup

View Article

Setting pressure point constraint in closed fluid mechanics problem

Hi My problem involves a closed sphere filled with magnetic fluid put near a rectangular bar magnet. Physically when this is done there is a pressure build up in the fluid because of the magnetic body...

View Article


Importing dxf files created in autoCAD into Comsol 4.0a

Hi I am trying to import dxf files created in autoCAD into Comsol as to create a 2d model. I am having problems when it comes to anything circular. Square or rectangular objects are fine, but when the...

View Article

Meshing

Hello, I"m looking for good tutorials for showing the method of "user controlled mesh". I cannot find any good tutorial in COMSOL. Please let me know. Thanks.

View Article


Particle tracing - particle counting

Hello to everyone, Im new to COMSOL and currently trying to work with particle tracing for fluid flow. The model we are working on is part of vascular network and we are using as physics : structural...

View Article

Convergence problem of contact mechanics

Hello, Following the earlier discussions on implementing an algebraic equation into a structural mechanics model, I fortunately got away with writing out explicitly an analytical solution. Thanks a lot...

View Article


Define Young's Modulus as a piecewise function dependent on strain

I'd like to define a new material with a nonlinear Young's modulus as a piecewise function dependent on strain. I've defined the piecewise function under Global Definitions, but I'm confused as to what...

View Article

Why does my parametric sweep slow down?

When doing nested parametric sweeps, they start off fast but slow down to a crawl eventually. What am I doing wrong here? Is there a faster way of doing this? Seems it has little to do with my computer...

View Article

How to Use Solutions from Previous Study as Initial Conditions

I'm trying to perform two RF simulations on the same model, but with two different sets of material definitions. The goal is to run a simulation on the first model and then use that solution as the...

View Article
Browsing all 25631 articles
Browse latest View live