Wind Tunnel Study on Aeolian Farmland Soil Movement

摘要：

A new experimental method was used for studying the dust emission. In the wind tunnel of Lanzhou University, the experiment of aeolian farmland soil movement was made by using the particle image velocimetry system (PIV). The farmland soil particles contain discrete soil grain (dust) and aggregate of soil. The variation of dust emission, the grain size of dust emission,the vertical number flux of soil aggregates and the grain size of the soil aggregates vertical flux with wind friction velocity is obtained. Dust emission increases with wind friction velocity and is the same with field results in magnitude. The velocity of soil particles is obtained, which increases somewhat with friction velocity.

关键词： Wind tunnel Dust emission Farmland soil PIV

作者: Ning Huang Lei Guo

作者单位: Key Laboratory of Mechanics on Disaster and Environment in western China,Ministry of Education,Department of Mechanics,Lanzhou University,Lanzhou,China ,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: 980-986

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）