Moving ferromagnetic objects inside magnetic field
Dear COMSOL experts, for our research we would need to simulate moving metallic leaves of finite extent inside a magnetic field generated by multiple coils carrying a DC current (i.e. no changing...
View ArticleAverage Nusset number and Standard Deviation Calculation
Please help me How to calculate Average Nusselt number over the heated wall and standard deviation of the temperature over the whole surface at different Ra values in COMSOL? (I am cosidering a square...
View ArticleHeat Generation From Impact
I am attempting to model the heat generated from the impact of two metallic spheres. I was able to solve the structural mechanics portion of the problem, but I am having trouble coupling the heat...
View ArticleElectric Currents Boundary Conditions Question
Hello, I am a relatively new user of Comsol, and I am trying to learn to use the electric currents Physics module. I want to model two copper cylinders with a contact resistance, and 1V applied across...
View Articledouts in comsol 4.3 version
Dear Sir, Iam using comsol 4.3 version for pipeline inspection modelling (3D), We have one doubt , we would like to move the coil from one place to another place by step by step,Is it possible to move...
View ArticleExtremely thin geometries
I created a cylinder with radius 1e-6 m and thickness 9e-10 m in 3D to make a continuum simulation of graphene. I have initial radial stress, an uniform body load along the thickness of the cylinder...
View ArticleWhat's Axial symmetry 1?
Hi, everyone I think people using 2D axisymmetry mode know the default Axial symmetry 1 condition. I feel this condition strange, as most of time there's no variable, no weak expression or no...
View Articleintegral value of variable till a radius value interior to the circle radius
Hi, I want to get integral of a variable till a point in the circle of radius r0, where this point would vary from 0 to r0. That means I want to get for all radius value till r0. With intop operator...
View ArticleHotel Savings Deadline for COMSOL Conference *Tomorrow, Tuesday* (9/11)
Hello, The COMSOL Conference is right around the corner. The Boston Marriott Newton is providing guests of the Conference a special discounted room rate for the event. The deadline is tomorrow,...
View ArticleCumulative sum ???
Is it possible to achieve (within comsol) a cumulative sum of a time varying data. Here I'm interested in the calculation of the cumulate mass of water going through a porous media. It is quite easy to...
View ArticleIntegral Constraint
Hey there, I want to impliment an integral constraint: the subdomain integral of one variable (say A) shall be constant. In the COMSOL guide on page 274 it is told to define the integration coupling...
View ArticleVisualization problems
The java heap space problem is solved, but now the simulation reaches 100% of the linear solver and nothing happens, Comsol uses a core of four available cores, I give same time that Comsol takes to...
View ArticleDifferent results with parametric sweep in induction heating model
Hi all, I'm using COMSOL 4.0a to model a 2D axisymmetric model of an induction heater. The real device runs at 62kHz, and when I run a Frequency-Transient study at that frequency for 60 seconds, I get...
View Articlecompressible flow with heat transfer
I am attempting to model hydrogen flowing through a heat exchanger at high speeds and temps (250m/s and 200K). In order to do this, the change in density of the hydrogen must be taken into account as...
View Articleusing function
Hi, I have some data like bellow and I want to use the fitting curve through this data as a function. I have tried the interpolation function but this error appeared >> interpolation grid axis...
View ArticleRequest for help about moving mesh.(Emergency please)
Hi guys, I have a question in using comsol software, particularly on heat transfer. Its a 2D geometry. A rectangle whereby heat is applied on the top surface and the 3 sides have a constant low...
View ArticleSolver Problem
I could not find the reason of the error. Can anyone help me? i tried all solvers none of them worked out.
View Articlehelp: connection error with matlab livelink
I'm trying to get the matlab livelink to work, but no matter what I do I always get the same error: I launch "Comsol with Matlab", the console opens, then Matlab opens, and the following error is...
View ArticleReg:- SHAPE MEMORY ALLOY Behaviour simulation in Comsol 4.2
Dear sir , I have been trying to simulate shape memory effect using electrical current as input in comsol 4.2. I had a problem in giving material properties like coefficient of thermal expansion ,...
View ArticleWhat is the motivation of new Nonlinear Structural Materials Modele in Comsol...
In my opinion Comsol Multyphysics was a tool for all. However, I am disappointed by the new Nonlinear Structural Materials Module. Since in earlier versions, comsol had already nonlinear material...
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