Eulerian–Lagrangian simulation of aeolian sand transport

摘要: Abstract A numerical investigation of aeolian sand transport is performed with an Eulerian–Lagrangian model. In this model, the gas phase described by volume-averaged Navier-Stokes equations two-phase flow. The particle motion obtained solving Newton's second law taking into account inter-particle collisions, where a soft sphere model used to describe collisions. dynamic process simulated. simulation results show that variation mean horizontal velocity particles height can be expressed logarithmical function or power at h > 0.02 m, and below 0.02 m. mass flux decreases exponentially for but there deviation from exponential decay due creep grains in near-bed region. It also shown collisions play important role saltation. Therefore present capable being applied study windblown movement.