泥沙浓缩旋管内单相水流阻力特性试验研究  

Experimental Study on Resistance Characteristics of Single-Phase Flow in Sediment Concentrated Spiral Tube

作　　者：许祥猛 陈铂[2,3] 陈绍文 赵利平[2,3] 方坤乐 

机构地区：[1]广东金东海集团有限公司,广东汕头515041 [2]长沙理工大学水利工程学院,湖南长沙410004 [3]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410004

出　　处：《人民黄河》2016年第12期126-128,共3页Yellow River

基　　金：湖南省教育厅科学研究项目(15B012);广东金东海集团-长沙理工大学工程技术研发中心资助项目

摘　　要：为给一种新型水沙分离装置——泥沙浓缩旋管提供设计依据,通过物理模型试验,研究不同曲率半径泥沙浓缩旋管内单相水流的阻力特性,测量了泥沙浓缩旋管内径和曲率半径对水头损失的影响。研究结果表明:曲率半径越小,该装置局部水头损失越大,局部水头损失主要由二次流造成;总水头损失也与曲率半径有关,该装置水头损失系数ζ与d/R呈正相关,二次流是流动阻力的主要来源。In order to provide the design basis for a new type of water and sediment separation device-sediment concentrated spiral tube( SCST),the physical model test was used to study resistance characteristics of single phase flow in SCST with different radius of curvature. The influence of inner diameter and radius of curvature on the head loss of SCST was measured. The results show that the greater the radius of curvature is,the smaller local head loss will be and the local head loss is caused mainly by the secondary flow. The total head loss is also related to the radius of curvature. The head loss coefficient( ζ) of SCST is positively correlated with d/R. Secondary flow is the main source of resistance to flow.

关 键 词：泥沙浓缩旋管 曲率半径 二次流 水头损失系数 

分 类 号：TV142[水利工程—水力学及河流动力学]