摘要
本文由紊流雷诺方程出发,采用普朗特紊流切应力构架和通过因次分析确定的掺长形式,探讨了弯道恒定二元环流的流速分布。导出的环流流速分布公式结构比较简明、合理,与实测资料有较好的拟合性.同时利用环流流速分布公式,进一步探讨了弯道水流中泥沙的横向输移问题,建立了便于数值模拟的计算模式。
In this paper, the structure of Prandtl Turbulent Stress and forms of mixed length de- tormined through dimensional anaiysis, a steady 2-D circulating velocity profile in curved channels is studied based on Reynolds Turbulent Equation. The derived oformula for circu- lating the velocity profile has a simple and reasonable structure, and coincides with the sur- vey data. In this paper we have aiso studied the lateral silt discharge in curved channels and have discovered an available model for numerical analogue of curved channels.
出处
《华北水利水电学院学报》
1992年第3期60-68,共9页
North China Institute of Water Conservancy and Hydroelectric Power
关键词
横比降
环流
弯道水流
横向输沙
Lateral slope
circulating current
silt content
turbulence diffosion, silt discharge
