Centroid/Center of mass
Hi, I have a COMSOL geometry composed of many different domains, each acting as an individual "grain" structure in a metal. I would like to find the centroid of each individual domain. I could find the...
View ArticleCentroid/Center of mass
Hi, I have a COMSOL geometry composed of many different domains, each acting as an individual "grain" structure in a metal. I would like to find the centroid of each individual domain. I could find the...
View ArticleCentroid/Center of mass
Hi, I have a COMSOL geometry composed of many different domains, each acting as an individual "grain" structure in a metal. I would like to find the centroid of each individual domain. I could find the...
View ArticleCentroid/Center of mass
Hi, I have a COMSOL geometry composed of many different domains, each acting as an individual "grain" structure in a metal. I would like to find the centroid of each individual domain. I could find the...
View ArticleCentroid/Center of mass
Hi, I have a COMSOL geometry composed of many different domains, each acting as an individual "grain" structure in a metal. I would like to find the centroid of each individual domain. I could find the...
View ArticleCentroid/Center of mass
Hi, We have a geometry which has lots of domains and we need to assign different material properties in an automated fashion to all the domains (using a script in MATLAB). Furthermore, the material...
View ArticleCentroid/Center of mass
Hi, I have a COMSOL geometry composed of many different domains, each acting as an individual "grain" structure in a metal. I would like to find the centroid of each individual domain. I could find the...
View ArticleTorque Calculation between diametric magnets
I'm trying to calculate the torque imposed on a diametric magnet as it rotates within the field of another permanent magnet. The model appears to work, however the values I am getting for the torque...
View ArticleEigenfrequencies of a spring WITH Gravity
In the real world, I have a flat steel beam that is acting as a spring. It starts out curved into a semicircular shape, and then it is loaded with a hanging weight that brings it down flat. I want to...
View ArticleElectric Currents and Transport of a Dilute Species to Generate IV Sweep Plots
Hello community, I've created a working and functional model that shows the migration of two oppositely charged species over time in response to an applied electric potential through the bulk material....
View Articlerf mems switch design (comsol 4.2a)
HeLLO, i'm working on designing a switch that should work on rf range. I'm able to draw 2d structure in work plane but still not able to fix one side of the cantilver beam. i hve following questions,...
View ArticleSynchronous machine (torque)
Hi, I am new to COMSOL. I am tryng to build three phase synchrnous machine model. I have applied three phase voltage to the machine but unable to generate torque in a machine, I do not waht is wrong...
View ArticleLumped port in Joule heating
Hi, I want to study the distribution of heat and magnetic flux density of a structure. So how can I couple the AC/DC and the heat transfer modules? Specifically, I want to use the lumped port in AC/DC...
View ArticleComsol does not finish the calculation even though convergence criteria is...
Hi, I have a rather strange problem with COMOL and hope that anyone can help me. I am trying to solve a "free and porous media flow" on a 3d geometry. The calculation is not converging very well but it...
View ArticlePost removed for no apparent reason
Dear administrators or moderators, i posted a Discussion the other day about getting wrong results in the AC/DC module and it was removed. Now, i just read again the "Rules and guidelines" and could...
View ArticleHow do I load arbitrary current to the coil in comsol?
In comsol, I want to give the coil arbitrary current defined by interpolation, but it always wrong. My specific approach is: (a) the global definition, using interpolation method defined excitation...
View ArticleNatural convection in heat transfer
I am solving natural convection problem for 5hrs in which first problem start with conduction and finish with natural convection effects for solid liquid interface location. During first 1 and 2hrs the...
View ArticleHow to cause calculated strains from PDE for constitutive model
Hi everybody! I have a quick question for you about implementation own constitutive model. So my model describe shotcrete behaviour and it’s composed from several parts responsible for shrinkage,...
View ArticleParametric Sweep without saving results
Hi all I am running several models in v4.2, and with all of them I need to sweep at least two if not 3 or 4 nested parameters (which works just fine!). I have done this using both the internal and...
View ArticlePhotocurrent calculation in RF module
Greetings I have a solar cell (silicon brick) with metallic rods on the top surface. This is well known structure to enhance the solar cell responsivity with plasmonic effects. So I want to calculate a...
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