二维均匀流悬沙垂向扩散系数的实验研究

华东师范大学学报(自然科学版) ›› 2008, Vol. 2008 ›› Issue (1): 112-118.

二维均匀流悬沙垂向扩散系数的实验研究

朱传芳，孔亚珍，丁平兴

华东师范大学河口海岸学国家重点实验室，上海 200062

收稿日期:2006-12-18 修回日期:2007-03-21 出版日期:2008-01-25 发布日期:2008-01-25
通讯作者: 丁平兴

Experimental study of vertical sediment mixingcoefficients in 2D uniform flow (Chinese)

ZHU Chuan-fang, KONG Ya-zhen, DING Ping-xing

State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China

Received:2006-12-18 Revised:2007-03-21 Online:2008-01-25 Published:2008-01-25
Contact: DING Ping-xing

摘要/Abstract

摘要： 利用波-流-泥沙实验水槽，进行二维均匀流输沙实验，研究悬沙浓度垂向分布、悬沙扩散系数及其垂向分布.结果表明,悬沙浓度沿垂线分布与Rouse公式吻合良好；悬沙垂向扩散系数与水流紊动垂向扩散系数成正比；悬沙垂向扩散系数的垂向分布可用抛物线描述,其最大值与水动力和泥沙条件紧密相关.

关键词: 悬沙浓度垂向分布, 悬沙垂向扩散系数, 二维均匀流, 悬沙浓度垂向分布, 悬沙垂向扩散系数, 二维均匀流

Abstract: Experiments on sediment transport by two-dimensional uniform currents were carried out using wave-flow-sediment flume. It is found that the vertical distribution of suspended sediment concentration (SSC) agrees well with Rouse's equation, and the vertical sediment mixing coefficient is proportion to the vertical fluid mixing coefficient, and may be described by a para-bola. The maximum of vertical sediment mixing coefficient is related to hydrodynamics and SSC.

Key words: vertical sediment mixing coefficient, 2D uniform, vertical distribution of SSC, vertical sediment mixing coefficient, 2D uniform

中图分类号:

P731

朱传芳;孔亚珍;丁平兴 . 二维均匀流悬沙垂向扩散系数的实验研究 [J]. 华东师范大学学报(自然科学版), 2008, 2008(1): 112-118.

ZHU Chuan-fang;KONG Ya-zhen;DING Ping-xing . Experimental study of vertical sediment mixingcoefficients in 2D uniform flow (Chinese)[J]. Journal of East China Normal University(Natural Sc, 2008, 2008(1): 112-118.