挟沙水流紊动通量的实验研究  

Experimental study on the turbulence flux in sediment-laden flow

作　　者：林鹏[1] 陈立[1] 

机构地区：[1]武汉大学水利水电学院,教育部水沙科学重点实验室,国家电力公司工程泥沙重点实验室,湖北武汉430072

出　　处：《水科学进展》2002年第2期153-158,共6页Advances in Water Science

基　　金：国家自然科学基金 ( 5 0 0 790 1 8);霍英东青年教师基金 ( 71 0 70 );高等学校骨干教师资助计划资助~~

摘　　要：利用MicroADV的声强衰减与泥沙浓度的关系 ,提供一种无接触测量含沙量浓度的方法 ;同时根据连续采样得到脉动的泥沙浓度 ,对这种脉动浓度进行了初步分析并根据得到脉动浓度 。The laboratory calibration were used to determine the relationship between backscattered signal strength and sediment concentration. A non-intrusively way of concentration measurement was introduced, and the inner fluctuation of concentration was analyzed rudimentarily. Finally, according to the fluctuation concentration acquired by MicroADV, the equilibrium of upward flux and downward flux were compared quantificationally.

关 键 词：MICROADV 通量 紊动扩散 泥沙浓度 挟沙水流 悬浮 实验 

分 类 号：TV143.4[水利工程—水力学及河流动力学]