摘要
建立了回流区水深平均平面二维水流泥沙数学模型，提出了平衡输沙模式下回流区泥沙淤积计算方法；采用长江科学院空腔回流泥沙淤积水槽试验数据，验证了回流区泥沙淤积计算方法的可行性和精度；通过数模计算分析，一方面加深了空腔回流区环流结构及含沙量分布的机理认识，另一方面研究了模型变率对回流区水沙特性的影响。
A\ 2-D depth average flow and sediment mathematical model for cavity flow is established,and a method of calculation for sediment deposition of recirculation is proposed in this paper. Feasibility and accuracy of the method has been verified by using sedimentation experimental data of cavity flume from the Yangtze River Scientific Research Institute. By means of calculation and analysis of the mathematical model, realization of recirculation structure and silt concentration distribution in cavity flow has been deepened in mechanism. On the other hand, effects of distortion ratio of physical model on flow and sediment transport of recirculation have been researched.
出处
《泥沙研究》
CSCD
北大核心
1999年第2期34-39,共6页
Journal of Sediment Research
基金
国家自然科学基金委员会和中国长江三峡工程开发总公司联合资助
关键词
空腔回流区
水沙数模
泥沙淤积
河道水流
Cavity recirculation, 2-D flow and sediment mathematical model, recirculation structure, sediment deposition, distortion ratio of physical model, turbulent model.
