Two phase flow using Level Set Interface
Dear all, I am using COMSOL 5.0 for simulating the scour at bridge piers in a computational domain. I took the Physics of turbulent two phase flow level set interface method but the solution is not...
View Articlemeshing 3d conjugate heat
Hi every one Did the mesh effect the solution significantly in case of conjugate heat transfer to upper surface of duct contain fluid moving in turbulent mode ?? and which turbulent mode should I use...
View ArticleConvergence of a huge model (10km) - bore hole heat echanger
Hey everybody! I am trying to simulate 2D time dependent study of vertical borehole heat exchanger using non-isothermal pipe flow and heat transfer in solids. My model consists of rectangular which...
View ArticleThe gravity term in the two-phase Darcy's law (v.5.2a)
Hi, The two-phase Darcy's law of the version 5.2a doesn't have the gravity term. Is there any way to solve this problem? Thanks. Youngmin
View ArticleNeed help in understanding how to develop Oscillatory flows inside a pipe
Hi, I am solving a FSI problem where the oscillatory fluid flow inside a pipe is deforming the solid. I am using COMSOL for the numerical simulation of the system. I have a rectangular pipe (2D) and at...
View Article2d input
hello! my module(2d) is 1 m*0.15 m and the thickness is 0.6 . inlet velocity=3 m/s,( heat flux (q)= 1500w/m2 ,h convection =12 w/m2.k for upper side ,you can say the area that undergo heat flux and...
View ArticleDefining free space as domain
Hi all, i have an issue with Comsol. I have a CAD Model of an electrical box with some power components. Defining the materials and heat losses is not the problem as i can select the components without...
View Articleerror when adding a velocity field to v flow battery model
Hi , I am new to Comsol. Recently, I am trying to build a vanadium flow battery model. I found the v flow model in model libraries is very useful. The model is too simple and I wanna add more to the...
View ArticleThermal resistance in non-isothermal pipe flow (nipfl)
Gooday, I'm using non-isothermal pipe flow model and heat transfer in solids physics in order to simulate a bore hole heat exchanger (BHE). the problem consist of a tube modeling by nipfl and a ground...
View ArticleSimulation of carbon atoms diffuse in amorphous media and collected at the...
Dear, I am beginner to use COMSOL software and I am not familiar with this software. However, you guys can help me out. I want to simulate a geometry of Nickel (300nm thick)/Silicon. Carbon atoms...
View ArticleDefine density as function of pressure
Hello I model laminar flow in micro structure. My material is compressible and I know that the density is change by the pressure. How can I define the density as function of pressure? Best regards...
View Articlehow to show 3D profile in 2D?
Hai friends, Can you please give an idea how to show the 3D image of the simulated velocity profile of fluid flow in the channel in 2D ?
View Articleaverage velocity
Hi all, How to find the average velocity and average shear rate of a fluid in the channel for the simulated velocity and shear profile in 3D?
View ArticleMultiple-size particle tracing
Hello everyone I have a short question on the particle tracing module. Does anyone know that whether it is possible to simulat particles of different sizes in the same model. How to implement this...
View ArticleIs there any possible way to use the results from a time dependent study in a...
Hello, I was wondering if I can use the concentration profile (from time dependent study with TDS module) as a boundary condition in a stationary study(AC/DC module). Thanks,
View ArticlePorous media modelling
Hi Whats the difference between porous media Transport properties and Transport properties in Transport of dilute species. Because I can implement in both cases the porous media, but the results are...
View ArticleThe difference between ALE module and FSI multiphysics module
Dear all, I have a model attached below. The upper part and lower part are rock mechanics domain (blue color), and the intermediate part are laminar flow domain. At initial stage, a small gap exists...
View ArticlePoisson-continuity coupled equation
Hello, I try to model the corona discharge in wire-cylinder geometry governed by the equations: nabla (V) =- rho/epsilon0 (Poisson equation) and grad (rho) * grad (V) = rho ^ 2/epsilon0 (equation of...
View ArticleProblems in assigning inlet-outlet boundary condition for a two phase flow
Dear all, I am trying to simulate a laminar two phase flow passing over a cylinder with a phase-field model where the cylinder is submerged into the water (heavier fluid), as a part of my project. I...
View ArticleSolid to liquid phase due to external heat source
Hi friends, I am trying to model selective laser sintering. I was able to model the moving heat source, and I have also implemented phase change module. But, I couldn't see the melting front due to...
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