人民长江2015，Vol.46Issue(23)：64-68,5.DOI:10.16232/j.cnki.1001-4179.2015.23.015
沙纹床面涡量特性实验研究
Experimental study of vortex characteristics of sand ripple bed
摘要
Abstract
The generation of sand ripple is closely related to the flow pattern, and the relation between sand ripple and flow condition is still not clear. The Particle Image Velocimetry ( PIV) was used to study the flow and vortex characteristics on the rip-ple bed. The vortex field on ripple bed were compared with that of the flat bed. The results show that the large vortex area was concentrated on the upstream and downstream slope of the ripple while the vortex values in other areas are nearly zero. The results were helpful for the study of sand ripple generation.关键词
涡量特性/PIV/紊动作用/沙纹床面Key words
vortex characteristic/PIV/turbulence effect/ripple bed分类
建筑与水利引用本文复制引用
张向东,蔡琼,厉凯,唐立模..沙纹床面涡量特性实验研究[J].人民长江,2015,46(23):64-68,5.基金项目
国家自然科学基金资助项目(50909036) （50909036）
水文水资源及水利工程学科国家重点实验室基本科研业务费用自主研究项目(2011585712) （2011585712）
