convert imported *.stl into solid
I am importing a rather complex geometry into COMSOL from Solid Works. After some tinkering with the import controls, I managed to import the object but I do not think COMSOL recognizes it as a solid....
View ArticleFace Cannot Be parameterized
Hi all; I try to import a STL file to Comsol 4.3a but this error appeared "Face Cannot be parameterized"? Any help? Thanks in advance :)
View ArticleStraw Poll: Who would like to see the model gallery documentation overhauled???
Hello all, I thought I'd post this here to get the community opinions before suggesting it to support. If I want to learn how to use an aspect of Comsol I work through example models and I visit the...
View ArticleElectrostatics and Electric Circuit
I am relatively new to COMSOL. I am trying to simulate a two part problem. 1. An electric pole is placed underwater 2. A circuit is built around it to measure the voltage drop across a resistor The...
View ArticleMeshing Internal Volume of CAD import
All, I am trying to model fluid flow inside of a CAD object. How do I create a domain inside the object that I can mesh? I have capped all the openings. Thanks, John
View ArticleIntegration Coupling Variables
I am trying to find the volume of a spherical shell using Comsol 4.3a in a 2D axisymmetric coordinate system. I attempted to do this by creating a integration coupling variable along the boundary of...
View ArticleProblem with meshing
Sir, While meshing my model, I am getting an error message as follows "Out of memory for mesh processing". What does that error mean and what are the correction requirements??
View ArticlePlease send me tutorial for ultrasonic wave propogation through liquid
I need tutorial on Ultrasonic wave propogation through liquid.
View ArticleEigenfrequency and Temperature in a Cantilever
Hello, I'm using COMSOL for some months. I'm simulating the eigenfrequency of a clamped-free beam (cantilever MEMS). The value of the eigenfrequency at room temperautre is correct (about 6.4MHz) but...
View ArticleDubinin Sorption Model on Dual Porosity System
Hope this message finds you all well. I have a little technical question. I am currently trying to build a dual porosity model using the earth science module of comsol multiphysics 3.5a. However, I...
View ArticleQuestions of the modelling of a light bulb using Heat Transfer Module
Dear all: Now I am trying to carry out some simulations using heat transfer module. To start with, I downloaded the "free convection in a light bulb" model, which can be obtained from:...
View ArticlePropagation loss in SAW devices
Hello! I use Comsol for SAW device simulations and design some time domain models for SAW delay line. Results (impulse responses) are rather good. Now I want to introduce propagation losses in my...
View Articleparticle size and geometric constraint of channel
Hi, I designed a microfluidic channel with gaps at 10 um. Of course, particles with diameter at 1 um can go through this gap, but particles with diameter of 15 um still can go through this gap, which...
View Articleimport a bmp image into COMSOL geometry
Hey, as stated in this webpage: www.comsol.com/products/formats/ Comsol can both read and write few types of images. However, when I tried to import a bmp image as my structure for flow simulation, it...
View ArticleCluster job that shows speed-up when using multiple nodes
Hi, I would be highly interested if someone could post an mph model file that they have shown to see speed-up when distributed across multiple nodes. I am having difficulty seeing any speed up for a...
View ArticleImport geometry from Matlab into Comsol
Hello, First of all, I want to emphasize that I am a beginner with Comsol. I am trying to import a geometry generated with Matlab into Comsol in order to study the wave propagation in this geometry. My...
View ArticleMie scattering in 4.3
Hello, I have already seen some discussion about mid scattering of a gold nanosphere. But I the discussions I have consulted, no one has yet implemented a mie scattering program in Comsol 4.2 or 4.3...
View ArticleMAKING STRIATIONS IN A SOLID CYLINDER
how do i make striations in a solid cylinder? I know it should be possible but some how cannot figure out how?
View ArticleWhere are weak contributions added in the governing equations?
When adding weak contributions to a particular physics, where are the weak contributions added in terms of the governing equations? Is it always on the left or right hand sides, or is it added...
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