Abstract
A rapid technique for calculating inviscid and viscous flows in turbomachinery cascades has been developed. The Euler and thin-layer Navier-Stokes equations are solved using the original explicit MacCormack algorithm. The Baldwin-Lomax eddy-viscosity model is used for turbulent flows. Convergence to a steady state is accelerated by use of a variable time step and a multiple-grid scheme. Computer time is reduced through vectorization. Details of the numerical method are presented along with computed results for two low-speed wind tunnel turning vanes, a Space Shuttle fuel pump turbine rotor, and a supersonic inflow compressor rotor. Results show that the method can predict subtle viscous flow phenomena in cascades and is fast enough to be used as a design tool.
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