Calculation of Shear Stress and Velocity Profile
Hello Tim, I was searching the net because I am working on a project to measure the shear stress of water in a rectangular flume. I came across your post. First of all can you please tell me how did...
View Articlethe mass and heat transfer from well to another well
please Who can guide me? wich is the application module used to compute and simulate the mass and heat transfer from the one suction well of water to a well discharge ? thank you
View ArticleChanging boundary condition makes my simulation slow
Hi there, Am working on microfluidics. I use laminar flow physics to calculate the velocity of my fluid flow. I have used the boundary condition as Velocity and then entered value in Normal inflow...
View ArticleCoupling three different physics (HT + Lam Flow + Radioation in part media)...
Dear all, I am struggling myself for a simulation problem: I have to simulate the heat transfer between solid and fluid in a porous solar absorber. The problem is that heat transfer in this case is...
View ArticleOut of Memory although using more RAM
Hej there, I ran a rarefied gas flow model (transitional flow) on my 16GB RAM machine. I build a 2D model with a D2Q36 quadrature and it runs on my machine. As I want to use an larger quadrature which...
View Articlemultiphase flow in microchannels
Hi Everyone, I am working on multiphase flow analysis in T- shaped micro channels. The active fluids used in the analysis were air and water. I didn't find any tutorial explain this. can someone help...
View ArticleInterjection Symbol for Heat Transfer in Phase I- Initialization Section
I'm using Heat Transfer Module together with Laminar-Two Phase Flow Level Set. Comsol solves everything related to fluid flow but it doesn't solve problem with Heat Transfer. And when I check "Step I...
View ArticleHeat transfer and fluid flow in molten pool
Hi, all, I'm new to COMSOL and want to do a project to simulate the molten pool forming and fluid dynamics within this pool. Currently I 've tried 2 ways to model this process: 1) Heat transfer in...
View ArticleTurbulent Flow to Heat Cylindrical Vacuum Oven in 2D by Time-Dependent Study
Hello community, Here we are trying to simulate a cylindrical vacuum oven in 2D by using Conjugate Heat Transfer with k-epsilon Turbulent Flow. The oven is set as a rectangle with: one inlet, one...
View Articlecross-section averaged fluid temperature as a function of flow direction
Hi, I am modeling 3D laminar flow with heat transfer in a channel of rectangular cross-section. How can I implement the attached formula for mean fluid temperature? I would like to determine the mean...
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 ArticleTracing a single particle in an expending pipe in a fluid
I would like to module an finite pipe inside a fluid that expands in time and the effect this expansion has on a near by particle. In the attached illustration, the wired tube is the pipe, and the blow...
View ArticleElliptical cylinder
I am completely new to comsol, so please forgive me for posting a problem I suspect have a simple solution. I have tried to search for a solution myself, unsuccessfully. In a microfluidic problem I...
View ArticleHow to extract wall shear stress of a turbulence flow?
Hej, I modeled a 3D turbulent flow, but I didn't find the expression of wall shear stress? Is there any one knowing how to extract the wall shear stress in COMSOL? Thank you
View ArticleThe affect of air flow on cantilever
I'm working on a project on COMSOL to study the affect of flow on cantilever, I used laminar flow and solid mechanics in my model. I drew the cantilever with fixed end in a box. two surfaces of the box...
View Articlecoupling two-phase laminar and turbulent model
Hi I'm new to COMSOL and I would like to build a model for my experiment. Based on the simulation result, I believe I need to use two phase laminar model to run the simulation in the beginning and let...
View Articlecoupling two-phase laminar and turbulent model
Hi I'm new to COMSOL and I would like to build a model for my experiment. Based on the simulation result, I believe I need to use two phase laminar model to run the simulation in the beginning and let...
View ArticleFree rotation of object in shear flow
I'm trying to simulate a 2D object (propeller shaped) in a shear flow. I managed to let the propeller turn and move the liquid, but I want to have the opposite: the fluid should rotate the propeller....
View ArticleHow to use Laminar Flow Pressure results in Solid Mechanics, help?
Hi, I need to use as an input in the Solid Mecanic module the Pressure results from Laminar Flow calculations. Can anyone explain me how to do this? thank you for yor answer. Best regards, Leonardo.
View ArticleHow to put the friction in the comsol???
Hello! I wonder something.......... i should put some data in the boundary settings of equation system. But that result was so weird.... i think the results in slip and frition states is not same. but...
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