弯曲分汊河道水流紊动特性研究  

Distribution of turbulent characteristics of flow in bending braided channel

作　　者：王伟峰[1] 王平义[1] 郑惊涛 刘怀汉 

机构地区：[1]重庆交通大学河海学院,重庆400074 [2]长江航道规划设计研究院,湖北武汉430011

出　　处：《水运工程》2009年第4期117-122,共6页Port & Waterway Engineering

基　　金：交通部西部交通建设科技基金(200632800065)

摘　　要：通过概化模型试验,结合理论分析,研究了弯曲分汊河道的水流紊动。给出了脉动动能分布的等值线图,详细阐述了紊动强度在汊道内的分布规律。进一步研究了弯曲分汊河道内存在边滩和洲头低滩时,对水流紊动强度分布的影响,深入探讨弯曲分汊河道的水流紊动。With the aid of generalized physical model experiment and through theoretical analysis,the turbulent characteristics of flow in bending braided channel are studied.After drawing the distribution isoline of pulsation kinetic energy,the distribution disciplinarian of intensity of turbulence is expatiated.The influencing factors of intensity of turbulence such as side flat and shoals at the head of river island are analyzed systematically.

关 键 词：弯曲分汊 ADV 脉动动能 紊动强度 

分 类 号：TV131.21[水利工程—水力学及河流动力学]