Select the model for the turbulent burning velocity. For many gas turbine applications, the Zimont model, which is the default, is a good choice.
Specify the value for the turbulent burning velocity. Typically, this will be an expression in terms of the laminar burning velocity.
Set the critical velocity gradient parameter to control the flame stretch and
flame extinction under high turbulence. The default value of
[1/s] is appropriate
for methane/air combustion at standard conditions. At higher pressures,
better results may be obtained by increasing the value. For details, see Adjusting Model Coefficients in the CFX-Solver Theory Guide.
Variable expressions (CEL) may be specified for Turbulent Burning
Velocity Factor
,
Critical Velocity Gradient
and
Variance Coefficient
.
For details on the model coefficients, see Adjusting Model Coefficients in the CFX-Solver Theory Guide.
Set Critical Scalar Dissipation to control the amount of
quenching occurring under rapid mixing. The default value is
[1/s]. For details on
the model coefficients, see Adjusting Model Coefficients in the CFX-Solver Theory Guide.
A variable expression (CEL) may be specified for Critical Scalar Dissipation.