人民长江2016，Vol.47Issue(16)：99-101,109,4.DOI:10.16232/j.cnki.1001-4179.2016.16.022
底坡变化对坡面流水动力学特性影响研究
Research on influence of bottom slope variation on hydraulic characteristics of slope flow
摘要
Abstract
Slope ratio is one of the important factors affecting the hydrodynamic characteristics. Variable-slope flume test was conducted to simulate the slope flow of different water depth, and the influences of 7 different slope ratios on hydrodynamic char-acteristics were studied. The results showed that the hydraulic gradient, Froude number and Reynolds number of slope flow in-crease with slope ratio, the resistance coefficient increases with the slope at first and then decreases. For the same slope, it was concluded that Froude number increases with depth at first and then decreases to stable, Reynolds number increases with water depth increase;for 0 ≤J≤1. 5%, the hydraulic gradient decreases with water depth at first and then stabilizes; for 2% ≤J≤3%, the hydraulic gradient remains unchanged and then decreases with the increase of water depth.关键词
坡面流/底坡/平均水深/水动力学特性/试验研究Key words
slope flow/bottom slope/average depth/hydrodynamic properties/experimental research分类
建筑与水利引用本文复制引用
刘元臣,张升堂,张景洲,王浩岚,李红..底坡变化对坡面流水动力学特性影响研究[J].人民长江,2016,47(16):99-101,109,4.基金项目
国家自然科学基金项目“现代流域分布式坡面汇流模拟的矢量糙率理论”(40971021),“考虑阻力作用的分布式坡面汇流多流向流量分配算法”(41471025) （40971021）
山东省自然科学基金项目“坡面汇流阻力空间变异及其影响研究”(ZR2014DM004) （ZR2014DM004）
