中文摘要：

采用拉格朗日方法模拟了风致积雪漂移现象,在数值模拟中考虑了颗粒运动后质量浓度对雪层表面摩擦速度的修正。以立方体周围积雪重分布为例,考虑了摩擦速度修正与否对模拟结果的影响。在低风速下,考虑摩擦速度修正对模拟结果的影响不显著。在高风速下考虑摩擦速度修正后,立方体附近颗粒较多的马蹄形区域内摩擦速度与质量浓度的变化最为显著。风速越高,计算域中雪粒总数的减少幅度越大,计算域内的侵蚀或沉积质量通量也越大。

英文摘要：

The phenomenon of wind-induced snow redistribution was simulated by using the Lagrangian method, considering the modification determined by the feedback effect of snow concentration on friction velocities. Illustrated by the case of snow redistribution around a cube, the influences of the modification on the simulation results were investigated. The effects of modification was found insignificant when the wind speed was low. With high wind speeds, the influence of modifications on friction velocity or concentration in the U-shaped area around the cube where snow particles were dense became sigificant. It was also found that when wind speed increased, the number of snow particles decreased and the mass flux of deposition or erosion increased significantly.