墩前角涡实验研究  

An experimental study on the vortices in the upstream region of a square cylinder

作　　者：张华庆[1] 魏庆鼎[2] 

机构地区：[1]交通部天津水运工程科学研究所,天津300456 [2]北京大学力学系,北京100871

出　　处：《水动力学研究与进展（A辑）》2003年第2期217-223,共7页Chinese Journal of Hydrodynamics

基　　金：交通部重点科技攻关项目 ( 95- 0 4- 2 2- 10 )

摘　　要：本文通过流动显示研究了墩前角区流场的层流和湍流状态 ,并应用LDV对湍流状态下的角区流场进行了测量 。The flow patterns under the states of laminar and turbulent flows in the upstream region of a square cylinder mounted on the flat plate were experimentally studied by the flow visualization, and measured by a laser-Doppler velocimeter. The relation between the horseshoe vortex and the parameters of flow was obtained.

关 键 词：桥墩 角涡 实验研究 流动显示 涡强 湍流 冲刷机理 

分 类 号：U443.22[建筑科学—桥梁与隧道工程] O357.5[交通运输工程—道路与铁道工程]