  The aim of this paper is two-fold: (1) to provide a detailed investigation of
the turbulent flow in an inline high-shear rotor stator mixer; (2) to provide a
comparison of two different classes of turbulence models and solution methods
currently available. The widely used multiple reference frame (MRF) method is
contrasted against a more recently developed sliding mesh method. The sliding
mesh algorithm accounts for rotation of the blades and is able to capture the
transient effects arising from the rotor-stator interaction. The choice of
turbulence model is shown to have a significant impact, with second moment
closures able to capture best the hydrodynamics. With an appropriate choice of
turbulence model and solution algorithm, we thus demonstrate the capacity of
CFD to provide accurate and computationally cost effective characteristic power
curve predictions.
