|January 17, 2010, 17:16||
KIVA (Wall boundary conditions)
Join Date: Jan 2010
Posts: 1Rep Power: 0
I try to run a gas flow in a duct in Kiva with uniform inflow boundary. When I apply the law of the wall as a boundary condition in kiva, the tangential velocity components are not zero at the walls, just the normal velocity is zero.
Also the average velocity is different in various cross sections.
I am wondering if any body has any idea about these.
|May 11, 2010, 10:41||
Join Date: Nov 2009
Location: United Kingdom
Posts: 35Rep Power: 9
I also had a similar problem before, since law of the wall condition doesn't work properly when you have a fine mesh.
To start with, I could recommend you to try either running the code with different boundary condition (free slip to check out what's going on) or to have a proper look at the law of the wall subroutine.
I tried to deactivate it when i run my code with very fine meshes, and at least the code doesn't crash.
hope it helps
|kiva, wall boundary conditions|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Wind turbine simulation||Saturn||CFX||45||February 8, 2016 05:42|
|Implementation of boundary conditions for FVM||Tom||Main CFD Forum||7||August 26, 2014 05:58|
|RPM in Wind Turbine||Pankaj||CFX||9||November 23, 2009 05:05|
|Wall boundary conditions for 3d-cylinder||Martin Bellmann||FLUENT||1||July 11, 2008 13:04|
|Boundary conditions?||Tom||Main CFD Forum||0||November 5, 2002 02:54|