Sand Emission Rate Study in Wind Tunnel by Particle Image Velocimetry

摘要：

Sand emission rate is important parameter in study aeolian sand movement, wind erosion and dust prediction model. Wind tunnel experiments were carried out to measure the sand emission rate along the windstream by Particle Image Velocimetry. The results suggest that the sand emission rate exponential increase rapidly with increasing wind speed. We divide sand particle into two parts: one is upward movement sand grains; the other is downward movement sand grains. The numbers of these two kinds’ particles exponential decrease with increasing height. Sand emission rate and sand fall rate increases with the fetch length.

关键词： Wind tunnel Sand flow Sand emission rate Fetch length

作者: Xiaohui Lv Lei Guo Ning Huang

作者单位: Key Laboratory of Mechanics on Disaster and Environment in Western China,The Ministry of Education of China,Lanzhou,730000

会议类型: 国际会议

会议名称: 第七届亚洲气溶胶会议

会议地点: 西安

会议语种:英文

页码: 973-979

在线出版日期: 2011-08-17（万方平台首次上网日期，不代表论文的发表时间）