作　　者： ; (杨淑敏）;

机构地区： 喀什大学物理与电气工程学院喀什844006

出　　处： 《科学技术与工程》 2016年第30期142-147,共6页

摘　　要： 利用数值方法模拟研究了双流体模型中风速和碰撞恢复系数对风沙运动的影响。结果表明:在相同风速下,沙粒粒径越大,其输沙率饱和值越大,饱和距离越长;在相同粒径下,风速越大其输沙率饱和值越大,饱和距离越大。当碰撞恢复系数不同时,输沙率沿流向的变化趋势相同,碰撞恢复系数越大,输沙率饱和距离越短;碰撞恢复系数相同时,粒径越大,风沙流输沙率饱和距离越长。 Using the numerical simulation method,the effects of wind speed and particle restitution coefficient of Euler two-phase model on windblown sand movement are analyzed.The results demonstrate that under the same wind speed,saturation value and saturation length of sand transport rate increase with the increase of sand particle size;when sand particle sizes are same,saturation value and saturation length of sand transport rate are increasing with the rising of wind speed.Under the same sand size,the development of sand transport rate in distance with different particle restitution coefficient have a same tendency.The particle restitution coefficient is larger,the satu-ration length of sand transport rate is shorter,when particle restitution coefficient chosen is same,saturation length of sand transport rate is increasing with the increase of sand particle size.

关 键 词： 欧拉双流体 风速 碰撞恢复系数 输沙率

领　　域： [环境科学与工程]