Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Effect of moving boundary on fluid flow
Posted 25 ott 2011, 14:05 GMT-4 Fluid & Heat, Computational Fluid Dynamics (CFD), Geometry, Mesh, Studies & Solvers Version 4.1 1 Reply
Please login with a confirmed email address before reporting spam
Hi everyone,
I am trying to model the effect of moving a small circle within a larger rectangle on the fluid flow within the space between the circle and the rectangle; I use moving mesh module (ALE) and Incompressible navier-stokes module.
(I only have 1 subdomain which is the space between the circle and rectangle)
First I solve the ALE module: inner circle moves with the speed of 0.1 m/s in the x-direction while the rectangle boundaries are set to zero mesh displacement.
Then I use this result to see the effect of circle movement on the fluid velocity. This time I set all boundaries as walls.
But I get convergence error. Is it the correct way of studying the effect of moving boundary on the fluid flow?
Any help is highly appreciated.
Thanks
Hesam
PS: I guess what I am trying to do is similar to this: www.youtube.com/watch?v=22ylDEEgPKI
I am trying to model the effect of moving a small circle within a larger rectangle on the fluid flow within the space between the circle and the rectangle; I use moving mesh module (ALE) and Incompressible navier-stokes module.
(I only have 1 subdomain which is the space between the circle and rectangle)
First I solve the ALE module: inner circle moves with the speed of 0.1 m/s in the x-direction while the rectangle boundaries are set to zero mesh displacement.
Then I use this result to see the effect of circle movement on the fluid velocity. This time I set all boundaries as walls.
But I get convergence error. Is it the correct way of studying the effect of moving boundary on the fluid flow?
Any help is highly appreciated.
Thanks
Hesam
PS: I guess what I am trying to do is similar to this: www.youtube.com/watch?v=22ylDEEgPKI
1 Reply Last Post 11 nov 2011, 11:47 GMT-5
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hello,
I have a similar problem, but i dont know solve it. Did you solve your problem ?
I have a similar problem, but i dont know solve it. Did you solve your problem ?