Flat heat pipe model file
Hi does anyone have the model of falt plate heat pipe simulation model tutoroal page : https://www.comsol.com/model/flat-heat-pipe-43841 i tried to flow the presentation, but couldn't understand how to...
View ArticleProprety of Nitrogen and Copper in Comsol
Hello family ; I find it difficult to define the parameters of nitrogen gas and solid copper For Nitrogen, I need; - Electrical conductivity - Total volumetric emission CoefficientFor the...
View ArticleA few questions from the Ion funnel example
Hello, I am a newbie to Comsol. I am going throught the ion funnel example. I have a few things which I did not understant quite well: 1) In Explicit1, what is the purpose of choosing boundary # 144?...
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Flux across a boundary as source term
Good morningI've a simple (i think) problem, but yet i can't find a proper solution. In general terms I've an equation of the kind: (i'm using the general pde module, but let's fix the idea and think...
View ArticleHow to make part of the geometry transparent in the postprocessing?
The below post is related to an archived discussion[start here]My question is the same as the above unanswered issue in the forum. Is it possible to control individually which part to be made...
View Articleerror with new version of comsol
my comsol model runs fine in version 4.3 b. When the same file is made to execute in version 5.5 b it shows errorParameteters:"ischemic __ toggle"",0. The following features has encountered a problem:...
View ArticleConcentration dependent Butler-Volmer equation
Is there any difference between Concentration dependent Butler-Volmer equation and Normal Butler-Volmer equation? I have built a PEM fuel cell model,and my results didn't show the influence of...
View ArticleHow do I add apparent resistivity with comsol？
Hello,I recently began using COMSOL and I have some questions. I created a simple ground model (2D), with resistivity 200 ohmm and a small parallelepiped in its center with resistivity 10 ohmm. I...
View ArticleModelling
I am new to comsol, how to bend the sharp edges of a cube? Is there any feature in comsol 5.4 related to this.
View ArticleDifferent temperature profile if I break up a domain into three domains with...
This happened when I was doing a electromagnetic heating solution. When I divide one domain of a metal into three domains, still all with the same material, the result is totally different... I am...
View ArticleCOMSOL Semiconductor Module
Hello Can I use COMSOL software's Semiconductor Modules to build MOS transistors with short-channel effects? Thanks
View ArticleHow to save model data when we compuate the model on the linux system
dear engineer recently, i meant a situation that my computer were not sutiable to running the model , so i decide to simulate the model on the linux system, but until i realized that i couldn't save...
View ArticleNo changes in volume of fluid for Condensation with level set
Dear all,I am going to simulate the droplet condensation (from vapor to liquid) with the latest version of COMSOL. To do that, I think I need the Laminar Flow(spf), Level Set(ls), and Heat Transfer in...
View ArticleError: The recorded Historical maximum value decreases during simulation?!
Dear All:I followed the approach given in the Blog article, https://www.comsol.com/blogs/using-the-previous-solution-operator-in-transient-modeling, to record the maximum historical value. The...
View ArticleCOMSOL Multiphysics® Intensive Online Training
I registered for COMSOL Online training program which is scheduled to commence from 20 Jan 2020. However, during purchase of the same, the payment failed. Now I am not able to see the payment...
View ArticleError of ray tracing model
The Solver displays a warning: Some rays were not released because the maximum number of secondary rays was reached when the time was 4.408826637143696e-012.
View ArticleHow to convert into Time dependent analysis
Hi, in the attached comsol library file regarding Li-ion Thermal 3D analysis, study 3 (Heat) is analysed in stationary format. How to convert that into "Time Dependent" analysis?
View ArticleWhy can't I get the right acoustic displacement field for a phononic band gap...
We mainly investigate the forward Brillouin scattering in photonic crystal fiber. Recently we fabricate a PCF with phononic band gap. And the frequency of the core resoant mode just lies inside the...
View ArticleFriction heat due to interface compression caused by sinusoidal vibration
Can comsol calculate the frictional heat generated by the interface compression deformation caused by sinusoidal vibration?Recently, I have been trying to perform sinusoidal vibration on two flat...
View ArticleUnable to install Femlab ecre v3.1 from 2004 CD
The below post is related to an archived discussionUnable to install Femlab ecre v3.1 from 2004 CD. Error. Have tried changing the environment setting. Have tried making win32 bit installer possible....
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