Erosion Prediction near a Stagnation Point Resulting from Aerodynamically Entrained Solid Particles

Abstract

An analytic solution is obtained for the inviscid flow of a two-phase gas-solid mixture near a stagnation point. For this type of flow the momentum equilibration parameter, which is a measure of a particle's momentum, is found to be the unique determinant of particle trajectories. It is shown that values of this parameter less than one-fourth identify particles which never impact with a boundary. The closed-form solution is applied to an erosion model to predict the relative erosion distribution along the boundary. The erosion rate is found to be proportional to the particle velocity raised to the exponent of 4.0