Coupled magnetic and solid-mechanics simulation
I have a question about coupling a magnetic study to a solid mechanics study. I attach to this email a simple model to explain my question. In the model you can find a permanent magnet with a round...
View ArticleHow to cut a geometry
Hello, I have a 3D geometry and I need to cut half of it to create a symmetry plane. Can you please describe the steps. Thanks. Regards, Dimitris
View ArticleEmpty parameter list
Hi everyone, I'm beginner to COMSOL and I'm modeling hyperthermia cancer treatment with magnetic nano particles. I'm using bioheat transfer for the body cells, mixture model for modeling nano particle...
View Articleaxisymmetric hollow cylinder model with Boundary condition
Hi, I want to draw a axisymmetric hollow cylinder model which is cut axially along the length. The inner tube radius is 12.5mm, shell side radius is 25mm, with length of 1.5m. Also how i have to given...
View Articleelectrostatic potential induced by charges
Hi, I am fairly new to comsol, your help would be helpful, I have an electrostatic model composed of two electrodes and medium( air, plastic), just like an parallel capacitor. In my 2D model, I built a...
View ArticleNormal flux = 0
After update to 4.3b a new feature emerged: the normal flux at an electrode (viz electric current), for example, is always zero. If my electrode happens to be parallel to xy, xz or yz plane, I can...
View Articleediting mesh
Hello, Is it possible to define mesh elements as subdomain and give each of them a source like current density? or is it possible to give each node a source? Thanks, Gizem
View ArticleComsol Error
Hi, I have tried to "remesh deformed geometry" on a dataset in order to export the deformed geometry as stl-file but I get the following error: =>unsupported operation for mesh of virtual composite...
View ArticleTransformer Impedance/Inductance Matrix
Would anyone have a suggestion for how to start analyzing an COMSOL AC/DC magnetic circuit model to come up with an inductance matrix? At first I thought I could use the port sweep, but it doesn't...
View ArticleModelling Pyroelectricity of PVDF
Hi all, I was wondering if anyone had undertaken a model to determine the pyroelectric output voltage of a PVDF film (or any other pyroelectrically active piezoelectric material) when exposed to a...
View Articleill conditioned preconditioner
I am trying to model the electromechanical response of a comb drive that is attached to a spring. However, every time that I try to simulate I get the following error: Failed to find a solution. In...
View Article3.5a AC/DC SPICE Netlist Import Error
Hello, I am currently attempting to import some SPICE Netlist code into COMSOL 3.5a. I am working on 3.5.0.603 if that helps. I am running into the error "Error: 5064 Invalid identifier for device...
View Article"Failed to compute elastoplastic strain variables" Help Please
Hello, I am an absolute beginner at COMSOL Multiphysics and I am trying to model the effect of the movement of soil on a steel pipeline buried in it. I have attached the model file with this post. I am...
View Articlecombine axial loads with torsion loading
I have a problems to do simulation about the combine loading above. I want to simulate analysis but the control of displacement for both type of loading. SO its possible to do so in comsol because i...
View ArticleCAD import preparation for successful modeling
In preparing CAD models for effective modeling, I have made the following I have found the following to be useful: 1) Importing to COMSOL as solids only 2) Ticking the three boxes for repair options in...
View ArticleRF Module: material dispersion for transient simulations
How do I simulate structures with dispersion using the transient solver in RF module? I am new at this, so any examples or step-by-step tutorials would greatly be appreciated.
View ArticleHow Can A Temperature Dependent Variable Changes Permanently?
Hello, I'm using COMSOL 4.3b for simulating a laser-material interaction, and I have predefined several parameters for specifying material's physical properties such as material's density, material's...
View Articlefix error
Hi I want to simulate "scatterer on substrate" from a pdf I downloaded from site. I did step by step from that toturial, but when I click "compute" it shows me the following error error in sweep: the...
View ArticleConvective heat flux Boundary Condition used at outlet in pipe
Dear All, I solving the conjugate heat transfer problem. The problem definition is: In a shell and tube configuration, the heat transfer fluid is flowing in tube with some velocity and shell side is...
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