Plotting volume fraction, dynamic viscosity of the dispersed phase for EE...
Greetings Am analyzing a sedimentation problem in a horizontal pipe using the euler-euler model, laminar flow interface. Am a new user to Comsol I want to obtain the volume fraction of the dispersed...
View ArticleTracing of particles on solid surface
Hi all, I wanted to know is possible model the fluidized particles and their interaction with the surrounding solid surface. Please suggest how to go about it. Thank you,
View Articlesymmetry boundary in flow model, symmetry plane not in flow domain
Hi there, I'm buidling a model of a heat exchanger which is symmetric along the flow direction (heat transfer+laminar flow). Unfortunetly I got two pipes which aren't part of the symmetry plane but...
View ArticleHow to simulate Marangoni effect of mixed solvents?
Hi, I would like to simulate the Marangoni effect of a mixed solvents with different surface tensions, but I can hardly find any example about this kind of simulation. In my case, I use 2 solvents, the...
View ArticleHii everyone
I am working on comsol 5.0 and am facing problem on passing two fluids (air, liquid solution) through single domain.Even i have tried 2 different inlets and outlets for 2 different fluids but after...
View ArticleFailed to find Consistent Initial Values
I am solving a turbulent flow problem in Comsol; and I've been having non-convergence issues. I have used small initial values; and I have also used a ramp function with steady state value of the inlet...
View ArticleThermal Wall functions
Can somebody elaborate on this from the reference manual pg (794) : "Wall boundary conditions for turbulent fluid flow. For the k-ε turbulence model, this condition is of the type k − r( ε ), −n · ∇ε,...
View ArticleNew to COMSOL : Modeling a water droplet impingement on steel
Hi, I want to model a water droplet impinging on Steel.I don't know where to begin.So if anyone has done anything in comsol regarding this it would be of great help to me if anyone could guide me...
View ArticleCONSULTATION
Hi everyone, I'm a low designer seeking and asking for your suggestions regarding my project. it happen that im looking for a formula and computation of how can i prove that the steel at about 200...
View ArticleWater droplet falling through air on a structured surface
Hi, Im new to comsol. I was trying to model a water droplet falling onto a solid substrate. The droplet should fall through air and then i should be able to calculate contact angles at various...
View ArticleMixing two different fluids in fluid flow
Hi I have been working on a flow analyzer that has two inlet and an outlet. I have two fluids, one is very dense and the other is a very dilute substance, both of them are completely different and they...
View ArticleSolution not computed error message
Please, what can cause this error "Solution 1 is not computed"?.
View ArticleZero external Pressure
Hi all, I have a FSI project in which I simulate a fluid flow in a pipe and i want 0 external pressure. I used fixed constrained for the outside boundaries of the cylinder and the results differ...
View ArticleWho can help me to explain in detail each of the parameters in the Laminar...
In the software, in the Laminar flow mould, the equation is shown below: ρ(u∙∇)u=∇∙[-pI+μ(∇u+(∇u)^T )]+F ρ∇∙(u)=0 who can help me to explain in detail each of the parameters in this Laminar flow...
View Articlepair flow continuity in form assembly mode
Hi, I'm trying to model blood flow and cholesterol concentration in an artery. because of high aspect ratio between the free blood flow region(lumen) and the arterial wall layers, and high velocity and...
View ArticleContact Angle of a sessile droplet
Hi, I'm a beginner in using comsol.I would like to measure the static contact angle of a water droplet. The purpose of this measurement is to determine whether a surface is hydrophobic or not. I've the...
View Articledroplet modelling
can anyone tell me the correct procedure for modelling a water drop on wetted surface.... i used 2 phase flow level set and phase field... but its not working.. i jst want to make dat drop on the...
View ArticleConvergence on a Rotating Machinery Mixture Module (multi-phase flow)
Hello everyone, Quick question, I'm trying to simulate fluid flow (water and air) in a reactor. It is essentially a mixer with an impeller to induce the flow of water while air is introduced via two...
View ArticleUser define interaction force
Hello Now I am using charged particle tracing module and ,as you know, the defult interaction among particle set by comsol is Coulomb force. I want to change Coulomb interaction to other types of...
View ArticleFSI of solid movement in fluid
Dear all, I try to model the deformation of a rectangular beam due to the harmonic oscillation in a fluid. I tried to implement the model by using the FSI physics. The harmonic oscillation was defined...
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