model is similar to the standard
model, but incorporates
near-wall turbulence anisotropy and non-local pressure-strain effects. A limitation of
model is that it cannot be used to solve Eulerian multiphase problems, whereas the
model is typically used in such applications. The
model is a
general low-Reynolds-number turbulence model that is valid all the way up to
solid walls, and therefore does not need to make use of wall functions. Although
the model was originally developed for attached or mildly separated boundary
92], it also accurately simulates flows dominated by
The distinguishing feature of the - model is its use of the velocity scale, , instead of the turbulent kinetic energy, , for evaluating the eddy viscosity. , which can be thought of as the velocity fluctuation normal to the streamlines, has shown to provide the right scaling in representing the damping of turbulent transport close to the wall, a feature that does not provide.
For more information about the theoretical background and usage of the - model, please visit the Fluent User Services Center.