|March 5, 2010, 03:15||
Join Date: Nov 2009
Location: Durban, South Africa
Posts: 9Rep Power: 6
I don't have a CFD background so I'm not sure if what I've done is correct; I was hoping for some clarity... I want to define a drag force at the floor of my simulation. I do this in the /0/U file:
In the boundaryField sub-dictionary, in the floor wall sub-dictionary I calculate the drag force using by using u_* = k u_k/ln(h/z_0).I think that the drag force in this case is the friction velocity?
I have to represent the friction velocity as a vector so I convert it using sin(x) * u_* and cos(x) * u_* where x is in the opposite direction of the flow (though I don't think it makes a difference?) and the z component of the vector is set to 0.
Am I totally off?
|drag force, friction velocity|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Velocity in Porous medium : HELP! HELP! HELP!||Kali Sanjay||Phoenics||0||November 6, 2006 07:10|
|Variables Definition in CFX Solver 5.6||R P||CFX||2||October 26, 2004 03:13|
|Simple question for friction velocity||jay||Main CFD Forum||0||February 12, 2004 17:12|
|friction velocity||kei-tee||Main CFD Forum||10||May 25, 2003 20:31|
|Terrible Mistake In Fluid Dynamics History||Abhi||Main CFD Forum||12||July 8, 2002 10:11|