长江科学院院报2019，Vol.36Issue(1)：55-59,5.DOI:10.11988/ckyyb.20171098
连续微弯弯道水力特性试验及模拟研究
Hydraulic Characteristics of Continuous Micro-bend Channel:Flume Experiment and Numerical Simulation
摘要
Abstract
The hydraulic characteristic of continuous micro-bend channel was researched on a continuous bend phys-ical model with sinuosity of 1.07 and Reynolds stress model. The water line, flow velocity field, circulating flow in bend channels, and intensity were examined. Reynolds stress model is proved well simulates the flow in continuous bend. In a given section, the vertical longitudinal velocity distribution in the adjacent of convex bank approached to logarithmic distribution, while the vertical longitudinal velocity adjoining concave bank displayed a bulging shape, increasing firstly and then decreasing with the growth of relative water depth. Circulating flow in bends displayed asymmetric double circulation structure, with the flow intensity larger in the surface and bottom of flume than that in the central part, and larger at concave bank than that at convex bank.关键词
连续微弯弯道/曲折系数/水力特性/水流试验/环流强度Key words
micro-bend continuous channel/sinuosity/hydraulic characteristics/flume experiment/circulating flow intensity分类
建筑与水利引用本文复制引用
罗平安,李觅..连续微弯弯道水力特性试验及模拟研究[J].长江科学院院报,2019,36(1):55-59,5.基金项目
国家自然科学基金项目(51666015) （51666015）
