农业工程学报2012，Vol.28Issue(12)：134-139,6.DOI:10.3969/j.issn.1002-6819.2012.12.022
含沙量对U型渠道水流流速横向分布律的影响
Effects of sediment concentration on lateral distribution of water velocity in U-channel
摘要
Abstract
Effects of change of sediment concentration on lateral velocity distribution in U-Channel if important to theoretically perfect velocity distribution of sediment-laden flow and study on water and sediment movement in channel. Introducing index formula for velocity distribution, changes of the coefficient k, z of index formula when the sediment concentration is 500-1.12 kg/m3 in flow were investigated by the flume experiments in U-Channel, illustrating that lateral velocity of sediment-laden flow follows index formula of velocity distribution in U-Channel. In the case of s<300 g/m3, k, z increased linearly and slowly with sediment concentration increasing, and for s≥300 kg/m3, changes of k, z was from slowly increasing to sharply increasing. It is observed that when sediment concentration s >≥50 g/m3, the center of U-channel appeared core area, and the core area broadens as increasing of sediment concentration.关键词
水力学/流速/含沙量/U型渠道/挟沙水流Key words
hydraulics/ flow velocity/ sediments/ U-channels/ sediment-laden flow分类
建筑与水利引用本文复制引用
张耀哲,王亚林,王文娥..含沙量对U型渠道水流流速横向分布律的影响[J].农业工程学报,2012,28(12):134-139,6.基金项目
国家自然科学基金青年基金项目(50909083) （50909083）
