天然感潮河道水流紊动特性分析  

Analysis of flow turbulence characteristics in the natural tidal reach

作　　者：卢金友[1] 徐海涛[1] 姚仕明[1] 

机构地区：[1]长江科学院河流研究所,湖北武汉430010

出　　处：《海洋工程》2005年第3期70-77,共8页The Ocean Engineering

基　　金：国家自然科学基金"天然河流大尺度紊动结构研究"资助项目(50179001)

摘　　要：采用多谱勒三相流速仪,在长江口徐六泾水文观测断面分别进行了涨潮、落潮时中泓与近岸垂线的流速观测,根据这些观测资料,对天然感潮河段潮流紊动的周期、频率、概率密度函数等进行了定量的数学描述,并对时均流速、紊动强度、雷诺应力等沿垂线分布进行了分析计算。Adopting the acoustic doppler current profile （ADCP）, a number of data on the flow velocity of the different vertical lines during flood tide and ebb tide at Xtdiujing hydrometric station located at the estuary of the Yangtze River were observed. Based on those data, the quantitative mathematical description of the cycle, frequency, probability density function of the turbulent tide at the natural tidal reach was carried out. The time-averaged velocity, turbulent intensity, distribution of reynolds stress along the perpendicular were analyzed and calctdated.

关 键 词：紊动特性 原型观测 感潮河段 ADCP 雷诺应力 

分 类 号：TV148[水利工程—水力学及河流动力学]