comsol command
hello i try to simulate array quantum dot when we use n similar objects. my problem is what is deffirence between the command (Union)and(compose). how write the formula for array obejects in compose....
View ArticleHow to simulate two physics field: e.g. Solid Mechanics and Electrostatics
Hi , I have a simulation about two physics field, that is, solid mechanics and electrostatics. In my model, there are two parallel plates. I give a force or pressure on one plate, then caculate the...
View ArticleConvert 2D to 3D
Hi, I imported an on chip inductor that I draw in Layout Cadence (Format *.gds). The inductor is in 2D and I want to convert it on 3D in COMSOl so I can go further with my work.. How can I do this in...
View Articlefield distribution
i design a insulator it get meshed but when i give study i show the which i design please tell what mistake i done and there is no error message in display.
View Articleerror in impedance calculation of multi-turn domain
Hello, I would like to calculate the impedance of a coil in a 3d model. For that I solve the problem in the frequency domain for several relatively low frequencies. I therefore can neglect the skin...
View Articletwo phase flow combined with porous media
Hi I have a 3D model of a DMFC channel. The physics associated with this channel are: 1. Secondary current distribution Cathode side: 2. Transport of concentrated species 3. Free and porous media flow...
View ArticleTemperature 3D Plot - Conversion Colour into Z-Coordinate
Hi. Maybe this is a simple problem, maybe not. My question is, I want to change my 3D plot with colour scaled temperature as the fourth dimension into a 3D plot while using a plane through my...
View ArticleCOMSOL in parallel mode: a speedup of 20% using 4 cores?
Hello everyone, I have performed the following experiment. Using the command -np #cores, I have forced COMSOL Multiphysics to use 1, 2, 4 or 8 of the available cores on my computer. I also used the...
View ArticleWater droplet falling through air on a structured surface
Hi, Im new to comsol. I was trying to model a water droplet falling onto a solid substrate. The droplet should fall through air and then i should be able to calculate contact angles at various...
View ArticleCoordinate system and COMSOL solver
Hi This may sound silly but I need to understand the basics. I am bit confused about how COMSOL handles coordinates. I have a circular geometry in 3D, preferably in theory it is usual to use a...
View ArticleCan I pause the calculation and check the intermediate result?
Hi All, Can I pause the calculaiton of COMSOL and check the intermediate result? I would like to check if the intermediate result is reasonable or not. I don't want to only depend on the convergence...
View Articlewhy COMSOL is solving so slowly
Hi All, I am running a case with radiation heat transfer. The 3D geometry is quite simple. Number of degrees of freedom solved for: 56826 (plus 39748 internal DOFs), and element number is around 24K. I...
View Articleplease help me how to eliminate the perspective effect .... how do you...
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View Articleplease tell me how to use the CAD live link program...?
I installed the auto CAD2014 Program after installed the comsol 4.3b So, I don't use the CAD live link... I wish to use the cap faces function but I don't use it .. help me
View ArticleLight Bulb Problem with a twist
Hi all, We don't currently have the heat transfer module, which we are talking about getting. We have a problem very similiar to the light bulb tutorial model. However we would need the argon pressure...
View ArticleHow to calculate the area or volume surrounded by contour ？ intop function
Dear All, I have a laser photothermal therapy model in which I coupled the bioheat equation with thermal damage equation (Arrhenius). The model consists of two regions, tumor and the body. The outputs...
View Articlehow to calulate the size of the area
Hi,,recently ,when i finish my simulation,i want to calulate the size of the area bounded by a given contour,Could someone tell me how can i do that ?Thanks a lot.
View Articlefailed to evaluate variable
I am having the following while i am trying to compute the radar cross section problem "radar-cross-section-8613" provided in the model library. Each time i try to compute the following error message...
View ArticleYour invitation to the COMSOL Conference – Savings Deadlines ahead
Hello COMSOL Community, Join engineers and scientists at the COMSOL Conference 2013 to learn about cutting-edge research in multiphysics simulation. Your COMSOL Conference Invitation: Boston:...
View Articlesingle_turn boundary coil.mph in 3D frequency domain
Hello I was wondering if anybody has access to the following model: single_turn boundary coil.mph that in a new feature of 4.3b as described in the related highlights. I want to do the same thing in...
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