矩形水槽中半圆柱形边墩周围水流紊动强度的研究  

Experimental Study On Tubulence Intensity Of Flow Around Semicircle Cylinder Pier In Rectangular Channel

作　　者：郭维东[1] 郭文卓[1] 张黎[2] 

机构地区：[1]沈阳农业大学水利学院,沈阳110161 [2]沈阳农业大学高等职业技术学院,沈阳110161

出　　处：《沈阳农业大学学报》2009年第4期471-474,共4页Journal of Shenyang Agricultural University

摘　　要：以矩形水槽试验为基础,利用先进的声学多普勒测速仪(ADV)对该试验条件下半圆柱形边墩周围水流紊动特性进行系统的研究分析,并全面测量了边墩周围水流的三维紊动强度。根据试验数据,探讨了水流的紊动机理,同时对半圆柱形边墩周围水流纵向、横向及垂向的紊动强度分布特点进行了比较。结果表明:垂向紊动强度沿水深变化较小,基本接近一常值;纵、横向紊动强度相对强于垂向紊动强度,说明边墩周围水流的紊动是各项异性的。With advanced Acoustic Doppler Velocimeter（ADV）,the flow turbulence patterns around semicircle cylinder pier are studied and analyzed on the basis of rectangular channel experiment,and three-dimension turbulence intensity of flow closed to pier is measured from all aspects.According to experiment data,the turbulence characteristics of flow are analyzed,at the same time,the distribution characters of longitudinal,transverse and vertical turbulence intensity of flow are compared in detail.The results obtained demonstrate that vertical turbulence intensity of flow is nearly a constant along the depth of flow,and threedimension turbulence intensity of flow closed to pier are different,as the longitudinal and transverse turbulence intensity are stronger compared to the vertical.

关 键 词：矩形水槽 半圆柱形边墩 紊动强度 

分 类 号：TV141[水利工程—水力学及河流动力学]