|September 19, 2011, 06:04||
Calculating Peclet no. for problem
Join Date: Mar 2009
Posts: 117Rep Power: 9
I need to calculate the Peclet no. to determine if an upwind scheme is better for my problem.
The Peclet no. is defined as LU/D
L = characteristic length, U = velocity, D the mass diffusion coefficient.
I am simulating a flow past an airfoil in air. Is U the inflow velocity?
L = airfoil length.
What about the mass diffusion coefficient? I only managed to get from wiki:
"Carbon dioxide in air has a diffusion coefficient of 16 mm2/s"
Hope someone can help. Thanks!
|Thread||Thread Starter||Forum||Replies||Last Post|
|Calculating forces on a non-closed surface||ScottN||FLUENT||0||March 1, 2011 18:18|
|Problems in calculating the fluid traction on the current structure frame in 3D models||fw407||OpenFOAM Running, Solving & CFD||0||August 6, 2008 12:04|
|Calculating time||thuy||FLUENT||5||April 10, 2008 04:23|
|How to update polyPatchbs localPoints||liu||OpenFOAM Running, Solving & CFD||6||December 30, 2005 18:27|
|A question about Peclet number||Zhong Lei||Main CFD Forum||8||March 12, 1999 09:26|