摘要
通过试验 ,分析了水利工程中中等半径大偏转角弯道的水流特性。讨论了弯道中线半径 r0 和弯道宽度 B的比值 (r0 / B)与弯道凹岸水流第一波峰位置θ1,以及 r0 / B与弯道凹岸水流第一波峰处水深 h2 和弯道进口水深 h1的比值 (h2 / h1)之间的相互关系及其影响 ,提出了防止弯道凸岸底部出现干底的界限值 ,验证了弯道凹岸水压力的变化 ,并给出了弯道波角β1和最小中线半径 r0 min
In accordance with the experiments, the water flow behaviors of middle sized radius with great angle of curvature in water conservancy project is analyzed, the inter relationships and influences among the ratio (r 0/B) of mean radius r 0 and width B of channel bend and that of location θ 1 of first maximum wave on outer bend walls of channel, the r 0/B with the ratio(h 2/h 1) of water depthh 2of first maximum wave on outer bend walls of channel and water depth h 1 of approach of channel bend are studied, the limiting value of preventing the occurrence of dry bottom on inner bend walls of channel is provided, and the variation in the water pressure on outer bend walls of channel is tested, and the empirical formulas are presented for the wave angle β 1 and the minimum mean radius r 0min of channel bend in this paper.
出处
《西安理工大学学报》
CAS
2000年第1期28-32,共5页
Journal of Xi'an University of Technology
