|July 21, 2010, 16:55||
Spalart - Allmaras Turbulence Jacobian
Join Date: Jul 2010
Posts: 1Rep Power: 0
I am trying to implement the SA turbulence model to an existing NS solver with FEM, where the NS and SA governing equations will be solved at the same time, coupled. I am having trouble in deriving the Jacobian for the SA equation.
I think the derivative of the NS equations with respect to turbulent viscosity Nu^tilde is zero. If the last row of the residual is the SA residual, the last column of the NS-part of the Jacobian is all zero (4 zeros for 2D case). But I am having trouble in calculating the derivative of the SA equation with respect to the states. I am using conservative variables (Rho , Rho*v_j , Rho*E, Rho*Nu^tilde) to define the equations.
Any help would be appreciated.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Numerical integration of Spalart Allmaras turbulence model||RenardP||Main CFD Forum||0||June 11, 2009 14:53|
|Discussion: Reason of Turbulence!!||Wen Long||Main CFD Forum||3||May 15, 2009 09:52|
|Spalart Allmaras Paper||Seroga||Main CFD Forum||0||April 7, 2008 02:48|
|Spalart Allmaras Turbulence model - Need article!||CFD Student||Main CFD Forum||0||December 27, 2004 04:28|