COMSOL Validation for External Flow
Hello all, Does anyone have any good references or published results for validation of COMSOL in an open/external flow model? I've worked through quite a few of the tutorials and some simple flow...
View ArticleReflecting and absorbing boundaries
Hi, I am new to Comsol. I would like to model some instantly released molecules inside a reservoir. The diffusion coff of these molecules is 6e-7 cm2/s. I have some questions about it. 1. How can i...
View ArticleFlow front tracking in porous medium without deformation
I would like to model in 2D a layer of a liquid layer sitting on top of a porous medium. This layer should flow inside the porous medium and wet it. In order to model that I need a way of tracking the...
View ArticleAirfoil Simulation, Lift and Drag Coefficients.
Hello, I am beginner to COMSOL and Simulation world. I have Comsol 4.4. I am modelling and Simulating Air flow past a symmetric and cambered airfoil. I've watched some tutorials on Youtube regarding "...
View ArticleLatent heat/ Phase change
Hello Frank van Gool ! I'm try to modeling a melting particle in very hot gas stream. I use particle tracing module for modeling particle melting. But particle tracing module doesn't have partic;e...
View Articlediffusion convection issues
Hi, I want to simulate the concentration variation of nano-particle in a micro-fluid channel under magnetic field, and to show nano-particle will build up in the region near the magnet. I have built a...
View ArticleCombining two physics :multiphase Flow and heat transfer
Dear all, I am studying the effect of gas presence in a liquid on the convective heat transfer coefficient h. To do that i have been thinking to combine diphasic fluid flow with heat transfer physic....
View ArticleProblem in convective flow simulation
I am now trying to solve magnetophoresis model by coupling CFD and transport of dilute chemical species modules together. I want to study the dynamical behaviour of the process and I used...
View Articlecan you help me?
Hi Yilong Zhou ,I want to simulate the mixing of nanoparticles. I have the same problem as yours. The simulation results are not consistent with the experimental results. Can you help me. Have you...
View ArticleModeling magnetic nano-particles in a fluid
Hi all, We wants to model magnetic nano-particles in a fluid (fluid velocity is 0). We don't know which model to choose in the model navigator, and how to create a nano-particles. Thanks
View ArticlePhase change in porous media
Hello, I am modelling a geothermal system, where a porous rock is saturated with groundwater and heated by an intrusion of magma. I have used 'Heat transfer in porous media' coupled with the 'Brinkmann...
View ArticleBuoyancy Force on Falling Sand Grain Example
Hello everyone, I know that there was a discussion about buoyancy forces acting on a rigid body but i spent some time for solving this problem and I will appreciate if you help me about my situation....
View Articlefrrofluid, magnetic field and diluted species
Hi, I want to simulate the concentration variation of nano-particle in a micro-fluid channel under magnetic field, I have built a modeling including transport of diluted species , laminar flow and...
View ArticleCoulomb force as a body force
Hi I am coupling the electric current module with the laminar flow module, to solve the flow generated inside microdroplet due to the electric field. I want to apply the coulomb force =charge ( Q)*...
View Articleplease help me?
Hi, I want to simulate the concentration variation of nano-particle in a Y micro-fluid channel under magnetic field, I have built a modeling including transport of diluted species , laminar flow and...
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 Articleasking for help about ale particle mover in Comsol
Hi, I am a fresh man in Comsol and trying to use it to simulate the particle migration in a viscoelastic fluid with an ale particle mover. However, it always says “Failed to find consistent initial...
View ArticleElectric discharge machining simulation
i am trying to simulate better magnetic and electric fields to get better material removal and surface finish in Electrical discharge Machining........which module i have to choose in COMSOL.......will...
View Articlehow to write an user defined PDE?
Dear all I am trying to write a PDE as attached. I have tried with the "coefficient form of PDE" physics, but, I am unable to write down the first term in right hand side of the equation (see attached...
View ArticleMeshing of boundary layers wont work
I am trying to mesh (and, eventually, compute) a model of a rectangular duct connected to a circular hole, where the duct and the lower part of the hole are filled with water, the upper part of the...
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