porous media flow using brinkamn equation, coupled with heat transfer
hi! I 'm trying to simulate a porous media flow coupled with heat transfer between the fluid and the porous medium. To be more specific, the whole scope of my simulation is to reproduce the results of...
View Articlemicrofluidic + external force field (optical force)
Hi, everybody I am a new user and just learned the tutorial of particle separation in microfluidics (www.comsol.com/model/red-blood-cell-separation-17013). I am working on a problems that how the...
View ArticleModeling Particles In Flow
Hello, I was curious about which module/physics interface would be appropriate for modeling a particle in flow. I realize that the particle tracing module is applicable when the fraction of...
View Articlemagnetohydrodynamic model
Hello. I learned that the latest version of Comsol-u is magnetohydrodynamic model. He was someone kind enough to send me this model? Thank you.
View ArticleParticle tracing - particle counting
Hello to everyone, Im new to COMSOL and currently trying to work with particle tracing for fluid flow. The model we are working on is part of vascular network and we are using as physics : structural...
View ArticleSOR error: SOR line did not find any lines
Dear all, I'm currently conducting a research about laser vapor deposition simulation using COMSOL 4.2a. In this simulation, chemical species will pass through a reactor and be heated by a moving laser...
View ArticleTemperature not continuous at solid/fluid interface
Hi everyone, The case I'm working on is typical conjugate heat transfer. Two tubes are arranged in concentric configuration. The inner tube is heated on the inner surface and cooled by water flowing...
View ArticleSetting pressure
I want to study flow in pipe I want to set v = 0.05 m/s AND p = 5 atmat the inlet How to set them both? I mean, under laminar flow -> inlet -> boundary conditions I can choose one or the other,...
View ArticleGeneral questions about particle tracing for fluid flow
Hi all, I am grateful for your help if you can answer to my questions. I read in the particle tracing doc that the system should be a dilute or dispersed flow and this means that I should calculate the...
View ArticleTemperature not continuous at solid/fluid interface
Hi everyone, The case I'm working on is typical conjugate heat transfer. Two tubes are arranged in concentric configuration. The inner tube is heated on the inner surface and cooled by water flowing...
View ArticleSimulation of flow of a liquid droplet on to a substrate and evaporation of...
Hi, i am student and a new user of comsol. i would like to know the capabilities of Comsol Multiphysics for a simulation of my project, which deals with the a multi phase liquid drop falling on a...
View ArticleEvaluating the maximum in a time interval
Hello to everyone, I would find trace the variation of a maximum magnitude function in interval time for a given position with COMSOL. For example assuming that the temperature variation is sinusoidal...
View Articleduplicate parameters/variable names
Hello, I am trying to simulate a FSI model in 2d-asymmetric however, COMSOL is giving me errors of duplicate parameter names. But these parameters seem to be coordinate/spatial variables. I am very...
View ArticleTemperature not continuous at solid/fluid interface
Hi everyone, The case I'm working on is typical conjugate heat transfer. Two tubes are arranged in concentric configuration. The inner tube is heated on the inner surface and cooled by water flowing...
View ArticleUnsaturated flow with two liquids
Hello! I have a few questions. In my model, I want to simulate a 3D column full of soil. The soil has an initial saturation level of water with some solute concentration (homogeneous water...
View ArticleDiffusion in Laminar vs Turbulent flows
I am modeling a falling film which absorbs a gas. I am interested in how the solute travels normal to the flow. The Laminar flow is a simple solution. However, I am investigating conditions which will...
View ArticleInternal Error xmesh Processing
I have been working on simulating "periodic" melting and solidification of a composite wax using Laminar Flow (spf) and Heat Transfer in Fluids (ht) physics with a Non-Isothermal Flow1 (nitf1)...
View ArticleIntegral of pressure constraint in dense suspension tutorial
Hi, I'm trying to figure out the meaning of the weak constraint on the integral of the pressure in the tutorial Two-phase modeling of a dense suspension. Mainly, a total force is defined via Fp_tot =...
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 ArticleWater/oil not mixing, COMSOL version 4.3b
Hello, I am using Comsol 4.3b and I am trying to set up a model to see the effect of mixing of two different liquids (consider water and oil). I have created two rectangles (domains1 and domain2) on...
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