明渠岸边横向取水口水力特性的试验研究  

Experimental study on hydraulic characteristics of lateral intake in open channel

作　　者：曹继文[1] 陈惠泉[1] 贺益英[1] 

机构地区：[1]中国水利水电科学研究院水力学研究所,北京100044

出　　处：《水利学报》2003年第10期32-37,共6页Journal of Hydraulic Engineering

摘　　要：对明渠岸边横向直角取水口的水力特性进行了试验研究。在试验室的水槽中,通过三维超声波流速仪(ADV)测得了取水口的流速数据,试验中针对不同的分流流速比,测取了主水槽的表底层分流宽度、进水口门流速场以及紊动能k和雷诺应力的分布。试验结果显示在取水口附近的水流结构具有明显的三维特性。取水口断面的流速分布与正常的明渠流速分布不同,其断面的最大流速常常在底层。The hydraulic characteristics of lateral intake in open channel are studied experimentally in a flume. The 3D acoustic Doppler velocimeter (ADV) is applied to measure the velocity distributions in the vicinity of intake and in the intake channel.The flow fields and distributions of turbulent energy k and Reynolds stress for different ratio of main channel velocity to intake velocity are obtained.It is found that the flow field possesses the characteristics of 3D flow and the velocity distributions in intake channel is not the same as that in normal open channel. The maximum velocity always exists at the bottom of the flow.

关 键 词：明渠 横向取水口 水力特性 

分 类 号：TV133[水利工程—水力学及河流动力学]