河南理工大学学报：自然科学版2011，Vol.30Issue(5)：600-607,8.
风沙运动中沙粒旋转角速度变化规律的数值模拟
Numerical simulation of variation of sands angular speed in wind- blown sand movement
摘要
Abstract
Spinning of sands is an important factor in wind - blown sand casualty, so a theoretical model is suggested in this paper to mathematically describe the effect of spinning of sands on the evolution of a wind - blown sand movement, which is considered the coupling interaction among the wind flow, sahating sands, and temperature. The numerical results show that at different height the distribution probabilities of angular speed of sands is single - peaked and asymmetric in wind - blown sand movement, and when the distribution probabilities reaches the maximal value, sands are downward spinning and angular speed reaches 400 r/s. When rotational sands lift - off and will fall the ground, variation of sands angular speed sands are more obvious. Meanwhile, Magnus effect apparently influence the trajectories of sahating sands, the transport rate of sand, and so on.关键词
Magnus效应/风沙运动/沙粒旋转角速度Key words
Magnus effect/wind -blown sand movement/sands angular speed分类
数理科学引用本文复制引用
岳高伟,蔺海晓,贾慧娜..风沙运动中沙粒旋转角速度变化规律的数值模拟[J].河南理工大学学报：自然科学版,2011,30(5):600-607,8.基金项目
河南省重点学科项目 （）
国家自然科学基金项目 （）
河南理工大学博士基金项目（648376）. （）
