蠕移沙粒流体起动风速的实验研究

摘要/Abstract

摘要： 设计制作了能够有效避免沙槽下风端沙粒塌陷的蠕移沙粒集沙仪,并分析了该集沙仪中集沙槽的高度和厚度对单宽蠕移输沙率实验测量结果的影响,给出了集沙槽的合理高度和厚度;利用该集沙仪在风洞中测量了不同风速下的单宽蠕移输沙率,外推给出了沙粒的流体起动风速。

关键词: 蠕移沙粒, 起动风速, 单宽输沙率, 实验研究, 集沙仪

Abstract: A sand trap for collecting creeping sand was designed to avoid collapse of sand on the leading edge of sand tank. Then wind tunnel experiments were conducted to analyze the impacts of height and thickness of the trap on the creep-sediment-transport rate, and the effective height and thickness of the sand trap was given out. By means of this kind of sand trap, the creep-sediment-transport rate was measured at different wind velocities. Finally the threshold wind velocity was extrapolated.

Key words: creeping sand, threshold wind velocity, transport rate, experimental research, trap

中图分类号:

X169

武建军;孙焕青;李建业;罗生虎. 蠕移沙粒流体起动风速的实验研究[J]. 中国沙漠, 2011, 31(3): 571-574.

WU Jian-jun;SUN Huan-qing;LI Jian-ye;LUO Sheng-hu. Experimental Research on Threshold Wind Velocity for Creeping Sand[J]. JOURNAL OF DESERT RESEARCH, 2011, 31(3): 571-574.

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