GASDYN_Upwind_Lbeta
(chamberwise) GASDYN parameter for FPM1 and FPM3
Default:
GASDYN_Upwind_Lbeta = 0.0 (first order time integration)
GASDYN_Upwind_Lbeta represents the parameter \( \beta\) in
GeneralizedUpwind.
Additional feature:
By putting a minus-sign in front, i.e.
GASDYN_Upwind_Lbeta = -A, we have
\begin{align}
\beta = \left\{ {\begin{array}{*{20}{c}}
{abs(A) {\text{ }}if{\text{ }}\nabla ^T{\mathbf{v}} > 0{\text{ (rarefaction)}}}\\
{0{\text{ elsewise }}}
\end{array}} \right.
\end{align}
Note: This parameter can also be set chamberwise for multiphase simulations (see also
KindOfProblem,
CHAMBER).
If it is not set for specific chambers, it is automatically set according to the non-chamberwise definition for all chambers.