Heat Transfer - flow
Greetings. I have a couple surface to surface radiation model (with solar tracking, similar to parasol example) involved with a couple laminar air flow model, typically modelling an outside environment...
View ArticleMaximum number of Newton iterations reached. in microfluidics model
Hi everyone I am trying to do a model of solid interaction with fluid in microfluid channel firstly I set input of inlets by using constant velocity (v) I could run the simulation so well then I want...
View ArticleComsol asking for Dynamic viscosity
Hello, I am pretty new for COMSOL. I am trying to build a simple model of a heat exchanger foundation. The model is part of solid and fluid, I, therefore choose Turbulent Flow and Heat Transfer in...
View ArticleMembrane wing in FSI
Hello, I'm trying to model a very flexible membrane wing that has been significantly pretensioned and is at a fixed angle of attack in a wind tunnel test section. I've tried a handful of approaches and...
View Articlehow to use level set with carreau model?
Hi all, I would like to use level set to research a non-newtonian problem. So I try it in the rising bubble case and I just change the setting in Component 1 (comp1)>Multiphysics>Two-Phase Flow,...
View ArticleCOMSOL Design of Membrane Deformation using FSI
Hello! We are currently doing research that models deformation of a membrane, and we are using COMSOL Microfluidics 5.2a. We want to know the feasibility of our design we present, as well as feedback...
View ArticleModelling fracture flow in stress field
I am modifying my earlier question so it becomes more clear what I want. I want the aperture size of fracture which is flowing fluid to be a function of stress. At start I want to include only...
View ArticleMethane/Air Combustion
Hello all, I am trying to recreate the OpenFOAM methane air combustion tutorial for reactingFoam and seem to be having some trouble starting the reaction. Any help would be great.
View ArticleUrgent: oil displacement by surfactant solution, problem of...
Hi everyone Help me please, I am at the end of the abyss. I work on: influence of the addition of surfactant on the displacement of the oil by the water-view of wettability changind and interface...
View ArticlePrescribed compression of fluid
Hi, I have a very simple model, consisting of a 1 x 1 m^2 square which is filled with Air. I know that this problem can be solved by assuming ideal gas, and computing the area of the deformed domain....
View ArticleHow to plot vorticity
I can visualize only pressure and velocity. Do you have any ideas about how to get the vorticity for a 3D problem?
View Articlerigid particle carried by a channel flow
Hi I have to simulate the displacement and rotation of a rigid prticule in a fluid flow and I am not a professional on comsol. So, is there anyone who could help me? or if you have any examples of this...
View ArticleTwo phase Liquid Liquid extraction
Hello, I am trying to model mass transfer through interface of two liquid in a two phase model. I believe comsol by default applies flux continuity at the interface. However I also want to an...
View ArticlePiezoelectric transducer for liquids
Hi all, I am using COMSOL to model a piezoelectric transducer directly coupled with liquid (oil or water) and using the tutorial provided in COMSOL website in this aspect. I am just defining one...
View ArticleTime Dependent of intake manifold
Hello, I am having an issue trying to simulate an intake manifold of 4 cylinders. I want to do it as transient flow. But in real life the each cylinder is not open at the same time. How do i tell...
View Article2D, in form of dimensionless .
Hello, I am Omar Saaed, now I am working on simulation of CO2-absorption by membrane contractor. I have problem with illustration of the concentration distribution in (tube, membrane and shell)-site,...
View Articlelevel set without body forece
Hello,everyone! Could anyone give me a case of level set without body force? I have already seen "the rising bubble" case, and I want to simulate a oil bubble in water flow without gravity. The inlet...
View ArticlePlane poiseuille flow between 2 flat plates
Hi everyone, I am new to COMSOL. I am trying to simulate a plane Poiseuille flow between 2 flat plates with a gap of 0.05 m and a pressure difference of 0.1 Pa over 0.1 m length (giving dP/dx=-1 Pa/m)....
View ArticleFailed to find a solution. There are 1 void equations
Hello, I'm running a flow in a pipe and I'm using the Conjugate heat transfer physics. My model converges and gives me results when the fluid in the pipe is water. As soon as I change the fluid to...
View ArticleFree Convection: Stationary or Time-Dependent Study
Dear all, So far in all my free convection simulations I have used Time-Dependent Study but it takes a lot of time, weeks and even months to get the results. The point is I am not interested in...
View Article