For a 3D geometry, is there anyway to get data from one of the plane without...
I have a 3D cylinder, is there anyway for me to get the information on the top surface and feed the information back to my simulation? is the boundary probe the only way? Or is there any way I can say...
View ArticleTime integration of a variable over the domain
Hi, I am solving a periodic fluid flow problem over a 2D domain. I need to find the time averaging of the term u*ux+u*vy at each point on the domain. I tried defining a global ODE but it gave an error...
View Article3D Wall Shear Stress
I realise this may have been asked before, but I'm running a CFD simulation of blood flow through a 3D cerebral aneurysm model. Initially, I have a laminar flow study in which I would like to visualise...
View ArticleSelecting domain inside an object
Hi I have created an object (cylindrical shaped) in Solidworks, and I want to select inside it as air domain (in COMSOL). How should I do this?
View ArticleLinear elastic material
Hi, I implied two linear solid mechanic (linear elastic material) in two rectangular(( Rectangular1)and rectangular2 ) ), there is a common inner boundary( number 2) between these two rectangular, i...
View Articleperistaltic pump model convergence
Hello, I am working on a model that is similar to the peristaltic pump model available in the “model gallery”. I would like to use this example to present my problem. The peristaltic pump model does...
View Articlesolver sequences
Hi, I am simulating fluid flow and heat transfer in a cylindrical pipe. what i need is a very long term simulation (i.e., 25 years) and I am using pipe flow module which assumes the pipe and 1D and the...
View ArticleModel coupling to 2D to 3D geomety (General Extrusion)
hello all, I want to do a model coupling of 2D geometry and 3D. For this i used general extrusion coupling for that. I want to couple outlet ( along y axis) and inlet boundaries of 3D geometry through...
View ArticlePipe Model for heat transfer (Conjugate heat transfer)
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...
View ArticleDarcy Law using PDE
Hi, I'm trying to implement the Continuity Equation with Darcy law and the Energy equation using a PDE (base package). The Darcy equation in the continuity is u=-(k/mu)*d(p,x) where k is the...
View ArticleFixed amount of confined fluids in presence of electric and magnetic field
Hi everyone, How can I apply electric and magnetic field on a fluid which is deposited on a plate and there is another plate at a some distance d apart from surface of liquid. (air above the fluid)....
View ArticleHow to change coordinate x to y in 1D?
Hi, Does anyone knows how to change the coordinate x to y in 1D model? I need to do an analysis of Darcy Law using the gravity effects (Buoyancy), but I couldn't rotate from x to y coordinate. Any...
View ArticleNo-slip on interior boundary
I like to solve (Comsol 4.1) Navier-Stokes (incompressible) in a 2D-domain that has an interior boundary (typically a line starting at some point on the exterior boundary and ending at some point...
View ArticleFree and porous media flow 3D simulation - convergence issues
hey all, I was using the free and porous media flow module (fp) to understand flow distribution patterns in my system. in the 2-D form it was working pretty neat. When I scaled it up to a 3D problem,...
View ArticleHow to Couple Free and Porous Media Flow with Heat Transfer In Solids
Hi Everyone, I am new to COMSOL and I am trying to simulate a solar panel cooling system. I am trying to simulate in 2D the heat transfer between a thin rectangular layer (the photovoltaic cell),...
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 ArticleError in multiple domain 3D simulation of thermal transfer NITF
Hello Sir Sergei, I am trying to model the heat and mass transfer a layer of cereal grains. At the moment I am still doing the thermal transfer and hopefully soon the mass transfer. The modeling of the...
View ArticleError in multiple domain 3D simulation of thermal transfer NITF
Hello Sir Henrik, I am trying to model the heat and mass transfer a layer of cereal grains. At the moment I am still doing the thermal transfer and hopefully soon the mass transfer. The modeling of the...
View ArticleSetting convergence condition in fluid simulations
Dear Sir/Madam I'm a novice in COMSOL use. I have a question regarding convergence in fluid flow simulations. I know that in FLUENT one has the possibility to set the divergence of velocity field to a...
View ArticleFor a 3D geometry, is there anyway to get data from one of the plane without...
I have a 3D cylinder, is there anyway for me to get the information on the top surface and feed the information back to my simulation? is the boundary probe the only way? Or is there any way I can say...
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