A Study on the Drag Coefficient of Sand Particles in Wind Sand Flux
风沙流中沙粒拖曳力系数研究

Drag coefficient is an important parameter for calculating the air resistance acting on sand particles in the wind sand flux.In this paper,taking sand concentration and sand shape in the actual situation into account,the drag coefficients of two sand particles that are at different heights from the surface are calculated using FLUENT software.Influence of wind velocity and interval between sand particles on the drag coefficient is discussed.Then the drag coefficients at different heights have been calculate...