Investigation of the behavior of reflected particles under conditions of heterogeneous flow past a blunt body: Experiment and calculation

Abstract

The behavior of solid particles in the neighborhood of a blunt body subjected to a heterogeneous flow is investigated experimentally and theoretically. A laser Doppler anemometer is used to measure the velocity of the dispersed phase. The particle dynamics are measured within the Lagrangian (trajectory) approach. As a result of physical and numerical simulation, the velocity distribution is obtained for particles of different types such as incident, reflected from the model, and re-precipitating on the surface. The size of the region of existence of the “phase” of reflected particles is determined, as well as the velocity of particles repeatedly interacting with the model.