advice for simulation set up or suitable tutorial (3D stress distribution...
Hi All, I am trying to help my fellow Orthodontics to showcase COMSOL's ability to simulate one of his problem. But I am struck and getting inconsistent results. The simulation is very basic and...
View ArticleFSI - 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...
View ArticleCooling 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...
View ArticleModel 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,...
View ArticleBuckling Amplitude
Hello, everyone I investigate a buckling of compressed plate and have a trouble. I can't find an amplitude of buckling for different pressure. Comsol doesn't react on a changes of compressive force...
View ArticleParallel plate model with magnetorheological fluid under magnetic field
Hi, I am trying to model the flow fields of magnetorheological fluid between non-magnetic parallel plate and permanent magnets under magnetic field produced by permanent magnets in in COMSOL3.5a. There...
View Articlemeshvol
Hello, I'm looking to extract the area/volume of each mesh element of my model. I then discovered the quantity meshvol. However I'm not exactly sure what this gives me: using meshvol I get a scalar...
View Articleextrude from 2d to 3d
Hi, i have successfully extrude from 2d geometry to 3d but how to add the thickness/depth on z -plane as right now the geometry drawn in x-y plane .
View ArticleIs 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...
View ArticleList 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...
View ArticleAbout FBAR（BAW）Filter
Hi everyone Is there anyone who has used comsol to simulate FBAR/BAW filters? I want to simulate FBAR filters. But I have some problems on simulation. Is there anyone could give me sonme advice on...
View ArticlePoisson-continuity coupled equation
Hello, I try to model the corona discharge in wire-cylinder geometry governed by the equations: nabla (V) =- rho/epsilon0 (Poisson equation) and grad (rho) * grad (V) = rho ^ 2/epsilon0 (equation of...
View ArticleCFD Boundary Conditions for Journal Bearings
Hi all, I have recently started working with Comsol. It seems very easy to use and so far I was able to build my model and have the basic physics working. I am trying to build a journal bearing model...
View ArticleThds Electrostatics coupled convergance problem
Hi everyone! I try to simulate a 3D microstructure of a lithium ion battery (just of the anode). I simulate the electrolyte with ionic transport of 2 ion species c_el, c_elA with c_el as positive and...
View ArticlePML for SAW interdigital transducer
Hi, i'm trying to simulate an interdigital transducer for SAW on a lithium niobate substrate but i have a lot of problems adding PML. I have previously simulated using periodic conditions but now i'm...
View ArticleNACA 0012 Airfoil with Spalart-Allmaras turbulence model
Hello, I am new to COMSOL and I thought I would start with a relatively simple model: a NACA 0012 airfoil at 0 angle of attack. The domain is small and the mesh resolution is relatively coarse to get...
View ArticleMultiple-size particle tracing
Hello everyone I have a short question on the particle tracing module. Does anyone know that whether it is possible to simulat particles of different sizes in the same model. How to implement this...
View ArticleCoupling between PDE and Electrostatics
Dear All, Does any one have any experience of solving a steady general form of PDE with steady electrostaics module. I am trying to solve a PDE [ Div(DuE) = 0] where D is the mobility coefficient and E...
View Articlewindings providing regarding
Sir/madam, I am doing my m.tech project in modeling of motor using COMSOL.3.5a in 2D. I would like to know the way in which i can provide my three phase windings in the stator slots. Thanking you and...
View Articlenot function COMSOL
I study university of tre ( Italy) I gave program I bought the computer in iran after that I put license can not go next I would like to help thanks
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