
If the RSM is used with the default model for pressure strain, FLUENT will, by default, include the wallreflection effects in the pressurestrain term. That is, FLUENT will calculate using Equation 12.77 and include it in Equation 12.74. Note that wallreflection effects are not included if you have selected the quadratic pressurestrain model.

The empirical constants and the function
used in the calculation of
are calibrated for simple canonical flows such as channel flows
and flatplate boundary layers involving a single wall. If the flow involves
multiple walls and the wall has significant curvature (e.g., an axisymmetric
pipe or curvilinear duct), the inclusion of the wallreflection term in
Equation
12.77 may not improve the accuracy of the RSM predictions.
In such cases, you can disable the wallreflection effects by turning off the
Wall Reflection Effects under
ReynoldsStress Options in the
Viscous Model panel.
