FLOW FIELD CHARACTERISTICS OF THE SAND FUNNEL AND ITS MECHANICS OF SEDIMENT TRANSPORT

作     者：Wang, Shun-Jiu Zhou, Zhu Hou, Jie Qiu, Xiu-Yun Ding, Jing Hou, Yu 

作者机构：Coll. of Hydraulic Eng. Sichuan Univ. Chengdu 610065 China Coll. of Water Conservancy Xinjiang Agric. Univ. Wulumuqi 830052 China Coll. of Hydropower Eng. Sichuan Univ. Chengdu 610065 China Dept. of Geogr. Zhongshan Univ. Guangzhou 510275 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2002年第14卷第3期

页      面：130-134页

核心收录：

学科分类：08[工学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 

基　　金：theNationalNaturalScienceFoundationofChina (GrantsNo :5 9379394andNo :5 0 0 790 31) 

主　　题：Mechanics Sand Sediments Three dimensional Vortex flow Water 

摘      要：The flow in funnel chamber is typical three-dimensional flow. The experimental results of clear water flow field and muddy water flow field show that the flow characteristics in the funnel chamber are favorable to the separation of water and sand. Tangential velocity sustains the vortex strength of the funnel chamber, axial velocity is benefit to the sediment sinking, and radial velocity is benefit to sediment moving to desilting hole. So the sand funnel is successful in sediment disposal. The sand funnel projection has also good desilting effectiveness in practice. Its average flushing discharge is 3% of inlet canal discharge, the sand disposal rate is 100% for the sand with grain diameter of more than 0.5 mm, and is more than 90% for the sand with grain diameter of less than 0.5 mm.