NVIDIA driver 305.93 causing erratic behavior
COMSOL was working great until I got a Tesla NVIDIA GPU. After installing the driver NVIDIA 305.93 I started getting erratic behavior when mouse clicking on the graphics. When I click to highlight a...
View ArticleSurface evaporation, condensation
Hi, I want to model surface evaporation from a water flow at 40 Celsius and observe the consequent condensation on a cold surface. Can you help me with the model that I should use? I could not find...
View ArticleFace and edge selection broken in 4.3/4.3a on NVidia/OpenGL
Continued from other thread:www.comsol.com/community/forums/general/thread/32259/ The other thread was marked as "Solved", but it's not solved (using software rendering is not a sufficient workaround),...
View ArticleHeat Transfer in Soils
Hi, I am a comsol user and I want to have a 2d axisymmetric model. In my model, I have a soil sample that I put a steel bar in the soil. I want to heat the steel bar with a constant temperature 500(k)...
View ArticleThermal Conductivity as a function of temperature
Hi all, I am trying to include thermal conductivity as a function of temperature in my model but its giving me error 'inconsistent unit'..let us say the function is -1.27E-9*(T)^3+8.09E-6*(T)^2-...
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 ArticleHagen-Poiseuille Flow
I am having problems getting the same result when I try to model the Hagen poiseuille flow as when I calculate it. For more information on Hagen-Poiseuille...
View ArticleSetting initial values for an iterative solver
Comsol user interface shows some options for setting initial values at the stationary study step at 'Initial values of variables solved for'. These are either zero or a solution - but we want to set...
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 ArticleDEP Model using Comsol 4.3
Hello, I am trying to do a DEP simulation in Comsol 4.3 and I want to apply an AC signal of 10V 14KHz in a pair of electrodes. I am presently using AC/DC model. I am able to apply a DC signal but I am...
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 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...
View ArticleMeaningul drag output
This is a working stationary turbulent flow model. I have created an integral solution set around the boundaries of the object id like to determine lift and drag for. All posts i have read involve...
View ArticleMeshing in matlab
Hi, I am having real difficulty to control my mesh in matlab. Basically I don't have any control over it. Its quite a simple model but im finding that if I change the numbers in the code, I get the...
View Articletumor ablation model
hello, i am trying to make a model like" tumor ablation" model in comsol Heat Transfer Module but i want to change the current from DC to AC current and i want to plot the electric field distribution,...
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