典型文献
Analysis of the spanwise vortex of open channel flows based on the Omega-Liutex vortex identification method
文献摘要：
In this paper,a particle imaging velocimetry(PIV)system of high-temporal-spatial resolution is used to investigate the spanwise vortex distribution of fully developed turbulent flows in an open channel and its relationship with the turbulence.The distributions of the time-averaged velocity,the turbulence intensity and the Reynolds stress are obtained in the longitudinal profile.The third-generation vortex identification method(based on the Omega-Liutex vector)is applied to accurately identify and analyze the vortex in the spanwise direction.The results suggest that the vortex density increases with the Reynolds number at a given aspect ratio(B/H)of the flow.The distribution trend of the spanwise vortex density in the vertical direction remains unchanged for different discharges.Specifically,the vortex density increases along the vertical direction and reaches the peak at y/H=0.15,then decreases and reaches the bottoms at the flow surface.
文献关键词：
中图分类号：
作者姓名：
Bin Li;Wen-jun Yang;Jie Li;Si-yu Jing;Yue Chen
作者机构：
Changjiang River Scientific Research Institute,Wuhan 430010,China;Fujian College of Water Conservancy and Electric Power,Sanming 353000,China;Department of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China
文献出处：
引用格式：
[1]Bin Li;Wen-jun Yang;Jie Li;Si-yu Jing;Yue Chen-.Analysis of the spanwise vortex of open channel flows based on the Omega-Liutex vortex identification method)[J].水动力学研究与进展B辑,2022(01):148-155
A类：
B类：
Analysis,spanwise,vortex,open,channel,flows,Omega,Liutex,identification,method,In,this,paper,particle,imaging,velocimetry,PIV,system,high,temporal,spatial,resolution,used,investigate,fully,developed,turbulent,its,relationship,turbulence,distributions,averaged,velocity,intensity,Reynolds,stress,are,obtained,longitudinal,profile,third,generation,vector,applied,accurately,identify,analyze,direction,results,suggest,that,density,increases,number,given,aspect,trend,vertical,remains,unchanged,different,discharges,Specifically,along,reaches,peak,then,decreases,bottoms,surface
AB值：
0.521223
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