ABSTRACT
Turbulence is inherently three-dimensional and consists of randomly varying motions in space and time. A formal definition of turbulence is given by Hinze (1975) as “...an irregular condition of flow in which the various quantities show a random variation with time and space coordinates, so that statistically distinct average values can be discerned.” The Reynolds number has been traditionally used to characterize the transition from deterministic flow to stochastic or chaotic flow. The mechanisms that produce random variation have been the subject of much research and although science has come a long way in single phase turbulent flows, there is still much more to research in the area of multiphase and multicomponent turbulence. This chapter is intended to provide a short review of the general features of turbulence and single phase turbulence modeling. In addition, it will highlight current methods for modeling turbulence in dispersed phase flows.
