Numerical simulations of viscous rotating flows using a new pressure-based method

A parabolic finite-volume procedure is described which can be used to analyze viscous rotating flows with complex geometries by using a curvilinear coordinate system. The finite-volume procedure incorporates the effects of rotation in the description of the geometries, and the Navier-Stokes equations are derived so that streamwise flows are assumed to be predominant in channels. Specific attention is given to the derivation of a modified parabolic procedure that includes the effects of rotation. The formulation is tested and compared to experimental data for problems regarding turbomachinery such as Johnston's (1972) 2D duct and Miner's (1988) impeller. Coriolis-modified K-epsilon models are also tested to study the effects of rotation on turbulence. Good agreement with experimental data show that the present method is accurate and effective for predicting viscous rotating flows.