[Fluent Inc. Logo] return to home search
next up previous contents index

12.19.11 Including the Wall Reflection Term

If the RSM is used with the default model for pressure strain, FLUENT will, by default, include the wall-reflection effects in the pressure-strain term. That is, FLUENT will calculate $\phi_{ij,w}$ using Equation  12.7-7 and include it in Equation  12.7-4. Note that wall-reflection effects are not included if you have selected the quadratic pressure-strain model.

figure   

The empirical constants and the function $f$ used in the calculation of $\phi_{ij,w}$ are calibrated for simple canonical flows such as channel flows and flat-plate 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 wall-reflection term in Equation  12.7-7 may not improve the accuracy of the RSM predictions. In such cases, you can disable the wall-reflection effects by turning off the Wall Reflection Effects under Reynolds-Stress Options in the Viscous Model panel.


next up previous contents index Previous: 12.19.10 Including Thermal Effects
Up: 12.19 Setup Options for
Next: 12.19.12 Solving the Equation
© Fluent Inc. 2006-09-20