The Effects of Shear and Spin on Particle Lift and Drag in a Shear Flow at High Reynolds Numbers

Abstract

Particle motions in the turbulent boundary layer are often seen in significant environmental problems such as desertification and air pollution, and they also occur in many industrial processes. It is, therefore, of great practical interest to investigate particle motions both in settling environmental problems and in designing industrial equipment. Particle motions in turbulent flows have often been investigated using numerical simulations. However, most of the numerical simulations were limited to small nonspinning particles at low particle Reynolds numbers of Re 100 have not been simulated, because of the difficulty for estimating the lift and drag acting on large particles.