The harmonious character in equilibrium aeolian transport on mixed sand bed
The harmonious character in equilibrium aeolian transport on mixed sand bed
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DOI：
10.1016/j.geomorph.2006.08.015
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发表时间：
2007-05-01
期刊：
影响因子：
3.9
通讯作者：
Xing, Mao
中科院分区：
文献类型：
--
作者：
Xing, Mao
通过风洞试验，研究了四种混合沙在平衡输运过程中的空间分布。计算了每个晶粒尺寸组的通量分布。结果表明，平均粒径的垂向分布与砂床中的粒径分布有着密切的关系。在对数线性图中，各主要粒度组的通量剖面均为直线，斜率几乎相等。各粒级的输运率占总输运率的比值与各粒级在砂床中的质量比成正比，其比值仅与粒径有关，这一协调规律适用于试验所用的四种混合砂。(c)2006 Elsevier B.V.保留所有权利。
Wind tunnel experiments were carried out to measure the spatial distribution in equilibrium transport of four types of mixed sand. The flux profiles of each grain size group were calculated. It is found that the vertical distribution of mean grain size has a close relation with the grain size distribution in the sand bed. In a log-linear plot, the flux profiles of main grain size groups are all straight lines and their slopes are nearly equal. It is also found that the ratio of transport rate of each size group to the whole transport rate is directly proportional to the mass ratio of each size group in the sand bed and the proportion value is only dependent on the grain size, This harmonious law is applicable to all four types of mixed sand used in the experiment. (c) 2006 Elsevier B.V. All rights reserved.