Solution of particulated viscous flow over a two dimensional cylinder and in a radial inflow turbine

Particle trajectories, particle fluid interaction, and erosion were studied for different solid particle sizes. The vicosity of the carrier fluid was into account and particle trajectories in viscous and inviscid fluid were systematically compared. Experiments carried out on particulated viscous flow over a two dimensional cylinder demonstrates the effect of the particles on such important flow properties as fluid steamline pattern, coefficient of drag and recirculation zone. The important effects of the solid particles on the fluid streamline pattern in a blade channel of a radial inflow turbine and a mixed flow turbine are evaluated. Results demonstrate the difference in particle trajectories, and impact locations between vicous and inviscid solutions, which would affect erosion prediction in turbomachinery. Statistical methods are used in combination with three dimensional particle trajectory calculations, the basic experimental erosion data and particle rebound characteristics, to predict erosion pattern in the turbine rotor blades.