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Linear elastic material

Hi, I implied two linear solid mechanic (linear elastic material) in two rectangular(( Rectangular1)and rectangular2 ) ), there is a common inner boundary( number 2) between these two rectangular, i...

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peristaltic pump model convergence

Hello, I am working on a model that is similar to the peristaltic pump model available in the “model gallery”. I would like to use this example to present my problem. The peristaltic pump model does...

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solver sequences

Hi, I am simulating fluid flow and heat transfer in a cylindrical pipe. what i need is a very long term simulation (i.e., 25 years) and I am using pipe flow module which assumes the pipe and 1D and the...

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Model coupling to 2D to 3D geomety (General Extrusion)

hello all, I want to do a model coupling of 2D geometry and 3D. For this i used general extrusion coupling for that. I want to couple outlet ( along y axis) and inlet boundaries of 3D geometry through...

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Pipe Model for heat transfer (Conjugate heat transfer)

Dear All, I solving the conjugate heat transfer problem. The problem definition is: In a shell and tube configuration, the heat transfer fluid is flowing in tube with some velocity and shell side is...

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Darcy Law using PDE

Hi, I'm trying to implement the Continuity Equation with Darcy law and the Energy equation using a PDE (base package). The Darcy equation in the continuity is u=-(k/mu)*d(p,x) where k is the...

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Fixed amount of confined fluids in presence of electric and magnetic field

Hi everyone, How can I apply electric and magnetic field on a fluid which is deposited on a plate and there is another plate at a some distance d apart from surface of liquid. (air above the fluid)....

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How to change coordinate x to y in 1D?

Hi, Does anyone knows how to change the coordinate x to y in 1D model? I need to do an analysis of Darcy Law using the gravity effects (Buoyancy), but I couldn't rotate from x to y coordinate. Any...

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impose heat flux fluid/fluid Interfaces: laminar (tpf) and heat transfer in...

All, I would like to impose a heat flux on a 2D fluid/fluid interface. I have considered utilizing an equivalent volumetric generation using the delta function and even the tpf.Vfi function to turn on...

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Cross Sectional Integration

Dear Fellows, I've got this problem since long time, and despite searching everywhere, I couldn't find the answer. The problem is a heat transfer with fluid flow coupled. I need to integrate over the...

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Help with magnetic hydrodymanic simulation

Task: Simulation of magnetic nozzle effect. There is a plasma source with known gas pressure, ion-electron density and electron temperature. There is a magnetic system around the source. The task is to...

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Difference in 3D simulation of duct to rotated 2D simulation?!?

Hi everyone! I created a simulation for a circular duct which is heated by a constant heat flux. Does it make a difference to simulate a 3 dimensional geometry or a 2 dimensional geometry (rectangle:...

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How to couple turbulent flow and porous flow?

Hi, I want to calculate the compressible & turbulent flow and heat transfer in porous media. Here I have two questions. 1. How to couple the turbulent flow and porous flow? 2. I want to consider...

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free convection help

Hi! i am Joseph from Spain, and i am trying to model free convection in a closed solar module, which is basically a closed box. I downloaded your 2D headlamp , and i can see it is pretty similar except...

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free convection problem help closed box

Dear Ziv, I am Joseph from Spain, and just saw a comment you posted 3 years ago about free convection in closed space. Did you finally solve the problem? i know how to do it with external convection,...

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two phase flow combined with porous media

Hi I have a 3D model of a DMFC channel. The physics associated with this channel are: 1. Secondary current distribution Cathode side: 2. Transport of concentrated species 3. Free and porous media flow...

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Water 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...

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Using Level Set Two Phase Flow (tpf) for any Solid Material Module

I want to model a two phase flow system where the phases will be Fluid and Viscoelastic (or any other Solid material) and also want to tack the interface using Level Set Two phase flow module. can any...

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Multiphase Stirred Tank

Hello! I'm trying to simulate a stirred tank of water with air bubbles in 2D Axisymmetric model. But, In the bubbly flow module doesn't exist the condition "sliding wall" Can you help me with this?...

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How to couple turbulent flow and porous flow?

Hi, I want to calculate the compressible & turbulent flow and heat transfer in porous media. Here I have two questions. 1. How to couple the turbulent flow and porous flow? 2. I want to consider...

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