How prevent an object from penetrating another object?
The attached file has a simple case that is a precursor to what I really need to model. The simple case consists of a membrane (hyperelastic material model) with a small quartz bead located a short...
View ArticleTrying to combine data tables into one to do multiple plots on the same graph.
I have two tables, and a plot associated with each. I want to plot the data in the tables on the same graph. Therefore I am trying to combine in the tables to plot the data on the same graph. But it's...
View ArticleFactor in error estimate and Tolerance factor
Hi, I am new to comsol. I was using fluent, but could not get things done there. Now when i start using comsol, i try to link things to fluent inorder to understand. In fluent while solving, we give...
View ArticleMultiple input ports in RF problems
Hello, I'am doing a simulation with RF module. It's about the mode analysis of a rectangular silicon waveguide. There are two waveguides. To propagate the monochromatic light of 1550nm (1.935e14 Hz ),...
View ArticleGaussian Heat Source
Hi, I am working on simulation of single spark EDM and I am taking the input parameter as heat flux and I having problem in defining the gaussian heat source. I have gone through the forum but...
View ArticleRotation angles for SC-cut
Hello, I try to simulate a SC-cut quartz resonator. I use the "Rotation angle method" in the "Coordinate system settings" window to define the orientation but I am a bit confused about the consecutive...
View Articletotal energy and loss in piezo model
Hello, I'm trying to determine the quality factor in a MEMS piezo resonator. But, I'm having difficulty calculating the total energy and loss. The piezo interface comes with W_tot and Q_h,tot already...
View ArticleSound Absorption Coefficient of Materials
Does anyone know how to simulate the "Sound Absorption Coefficient" of materials? I tried to build a waveguide (impedance tube) on top of the materials, but it doesn't work for high frequency.
View ArticleProblem with Modeling a multi-stage agitated vessel
Hi all, I am having problem getting my model to run and converge. I am trying to model a six-stage agitated vessel in 2D. I have followed the steps described in the posted modeling of baffled mixer...
View ArticleBoundary Interaction?
I am currently working on a model that uses the Heat Transfer in Fluids module in the lower domain to simulate the performance of a Metal Hydride that is absorbing heat by a given reaction. The part of...
View ArticleShow which computer is using a license
We have a network license for COMSOL 4.3a. This is a fairly large laboratory setting. People here have a bad habit of leaving COMSOL open on their workstations when they go home for the day, locking up...
View ArticleTwo phase Phase field method
Hi, I am using a phase field method to tract the meniscus formation at the exit of a micron size nozzle and at the same time air is flowing over the meniscus. I am having some problems with the...
View ArticleEFFECTIVE INDEX
Hi eveybody. Actually I am trying to plot effective index of PCF with variation of diameter in COMSOL.I could not know how to put the diameter values and where to put.Please help me in this regard.I am...
View ArticleData export using Matlab Livelink
I have designed a magnetic coil model in COMSOL and successfully imported it in MATLAB. I am plotting norm of magnetic flux in COMSOL Model. Now I want to extract the magnetic flux data in a MATLAB...
View ArticleImport Geometry from MATLAB to COMSOL
Hi, I am new to COMSOL. I have a biological tissue geometry that I got from MRI images into MATLAB. Now I wish to import that geometry from MATLAB into COMSOL to simulate bioheat transfer. I have read...
View ArticleLinking problem when developing GUI with java API
Hello everyone! I am trying to develop a custom GUI in java using COMSOL API. I am following the guidelines in the API Reference, but if I try to paint the result on the GUI, I get a linking exception...
View ArticleHow to applicate a magnetic field on a sensor
Hello, I'am new to COMSOL. I wish to applicate a magnetic field on the metal electrode of a surface acoustic wave sensor, But I did't found the way to do it. Thank you for your help myriem
View ArticleHelp with Dielectrophoresis simulation
Hi, I am very new to COMSOL and DEP (Dielectrophoresis). I have got a simple model through the AC/DC module and I have made the simulation in DC mode instead of AC for simplicity purpose and I have...
View ArticleMultiple input ports in RF problems
Hello to everyone. The RF module Users Guide, at page 72, says (Note at the top of the page) that it is possible to have more than an excited inport, with the drawback that S-parameters are not...
View ArticleNatural Free Convection
Hello, I'm attempting to model the temperature rise above ambient over the period of one day within a sealed concrete trough buried in soil with its top exposed to outside air. I have successfully...
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