串列双圆柱水流特性试验研究  

Pilot Study of Serial Two-Cylinder Flow Characteristics

作　　者：杨纪伟[1] 郑薇薇[1] 李书芳[1] 

机构地区：[1]河北工程大学,河北邯郸056038

出　　处：《南水北调与水利科技》2009年第2期88-89,共2页South-to-North Water Transfers and Water Science & Technology

摘　　要：通过对串列双圆柱不同间距时的流速分布进行试验分析,得知水流进入桩柱间隙区域后,正对桩柱的垂线流速分布由对数分布变为S型分布。沿横断面方向,流速改变形式十分相似,各曲线分布趋势沿水槽中心呈对称分布。对于不同间距,对水流影响不同,间距越大,桩周围流速减小幅度越小,流速改变波及面越小。本次试验的分析结果为码头工程设计提供了参考。The velocity distribution of serial two-cylinder at different spacing was tested and was informed that when the water flows into the gap region of piles, vertical velocity distribution which is behind the piles becomes S-type distribution from logarithmic distribution. Along the crosssectional direction, velocity change in format is very similar, The trend of the curve distribution shows symmetrical distribution along the center of sink. For different spacing, there are different impacts on the water, the greater the spacing, the smaller reducing the rate of flow velocity around the pile, the smaller magnitude areas of velocity change. The test results of the analysis provide a reference for engineering design of the terminal.

关 键 词：垂线流速 水流特性 流速分布 桩柱 

分 类 号：TV131[水利工程—水力学及河流动力学]