|December 20, 2005, 02:55||
Initial conditions for airfoil in c-grid
I am simulating an airfoil in a flow. my solver is a fractional step non-staggered unsteady 2d NS FVM solver. I'm also using a rhie-chow interpolation.
if i set the initial conditions as u=1 throughout the c grid's cell center and u=1 at the faces of the outer boundaries cells, after about 10 time steps, I get a reasonable answer with the far field velocities around u=1.
however, if i now set u=1 at the only outer boundaries cells' center and faces, I'll set u=1.5-1.9, with bigger values at the boundaries.
May I know why this is so? In the 2nd case, I'm trying to simulate a transient condition such that the flow start from the left. Is there anything wrong?
how should the initial condition for the velocities be set and what is the basis?
|Thread||Thread Starter||Forum||Replies||Last Post|
|SimpleFoam k and epsilon bounded||nedved||OpenFOAM Running, Solving & CFD||15||December 2, 2016 03:40|
|Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3||bookie56||OpenFOAM Installation||8||August 13, 2011 04:03|
|Error while running rhoPisoFoam..||nileshjrane||OpenFOAM Running, Solving & CFD||8||August 26, 2010 12:50|
|Problems with simulating TurbFOAM||barath.ezhilan||OpenFOAM||13||July 16, 2009 05:55|
|On the damBreak4phaseFine cases||paean||OpenFOAM Running, Solving & CFD||0||November 14, 2008 22:14|