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AC Electrical Field simulation in interdigit structure
hi I want to do AC filed simulation for interdigit structure. I am wondering what kind of physics should I select and how I can apply AC signal to my structure? I would appreciate any help
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Define simple-support boundary condition of a beam (Solid Mechanics)
Hello everyone, I am a new Comsol user and through the past few months I have made simple models comparing the results with some theoretical models. I will bother you with plenty of questions the next...
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Issues with Full Coupling of Physics
Good day, I am having issues with fully coupling two physics. My system contains the solid mechanics physics coupled with a general form PDE to model concentration change and the diffusive properties...
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jpeg to dxf
Hello everyone, I am trying to import an image in to my model however i am not clear on how to convert the .jpeg to .dxf, i tried a few online softwares but of no use. May your expertise assist me....
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which kind of solver?
Hi all, i am doing some kind of simulation in RF using 4.3 version comsol and the RAM of my computer is about 30G , how to select the best solver to use almost of my RAM to finish the task as faster as...
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Symmetry
Dear all, sorry the continuous questions today! I am going to use symmetry for the geometry as in the picture I attached. The simplified geometry is a multilayer (only the green part) composed of...
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Evaluation of Volumteric displacement
Hi all, I am modelling a diaphragm deformed under pressure loading in an axisymetric model. I was wondeing if there is a way to evaluate volumetric displacemnt of the diaphrgam due to displacement....
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Temperature change from expansion of air
I am trying to model the flow fields of a fluid (air) traveling through an orifice. I have a working model that works great using only the laminar flow module. However, the viscosity of the fluid is...
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Coupling B/W two solid stress-strain modules
Hi all, I am trying to model a 3D structural mechanics problem with two separate solid stress-strain modules coupled together at the interfacial boundary through equal displacement boundary condition...
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Animation depending on distance
Hello dear Comsol gurus, I have made a CFD simulation (stationary) which is based on the model library example of the static mixer. I have also generated the slices and surfaces to see how my fluids...
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FSI - vibration study of a cylinder in a fluid flow
Hello all, I am new to Comsol. I am trying to study flow induced vibration of a cylinder fixed at one end and free at other. The cylinder is placed vertically against the flow. Is it possible to find...
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Cooling of a metal box
Hallo to everybody! I'm trying to realize the simulation of a metal box (fillled with air and including an heat source, and surrounded laterally by other boxes that I consider through the...
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Model couplings: Integration vs. Summation over nodes
Hello, I am working with two modules Structural Mechanics and general form PDE as coupled. I need a model coupling to define an integration. When I choose "Summation over nodes", my model works fine,...
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Is there a way to do a temperature dependent heat source in Conjugated Heat...
Hi I'm working in the conjugated heat transfer physics and I'm hoping/wondering if there is a way to make the heat source temperature dependent. I have a cable that is covered with different materials...
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List expressions and predefined quantities in Maltab or Java
Hello everyone, I'm looking for a way to find the "expressions and predefined quantities" a model offers within matlab or java. Via COMSOL-GUI, this is simply possible by clicking one of the two...
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parametric sweep in a contact problem
The attached file shows a simple axisymmetric problem in 4.3a where a screw-shaped part is being pushed into some uniform bone by an axial force. In the attached model, there are identity pairs between...
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Solution isn't converging
Hello everyone, I'm having a problem with my simulation, where it isn't converging. It's a very thin plate (10 nm) of graphene, and the dimensions of it are around 0,5 um. I've made a simulation where...
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Modeling Capacitor with Electric Currents
Hi, So I am trying to model a parallel plate capacitor with a variable overlap between the plates. Going through the ACDC models in COMSOL, I don't really understand how using electric currents can be...
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AC Electrical Field simulation in interdigit structure
hi I want to do AC filed simulation for interdigit structure. I am wondering what kind of physics should I select and how I can apply AC signal to my structure? I would appreciate any help
View ArticleClik here to view.
Define simple-support boundary condition of a beam (Solid Mechanics)
Hello everyone, I am a new Comsol user and through the past few months I have made simple models comparing the results with some theoretical models. I will bother you with plenty of questions the next...
View Article