长江科学院院报2013，Vol.30Issue(8)：54-57,83,5.DOI:10.3969/j.issn.1001-5485.2013.08.013
窄缝急流冲击波与水舌扩散规律研究
Location of the Confluence of Rapid Shock Waves and Regularity of Water Tongue Diffusion of Slit-Type Energy Dissipator
摘要
Abstract
By changing the inflow Froude number Fr and the contraction ratio β of narrow slit in model experiments,we researched the confluence location of rapid shock waves and the diffusion regularity of flow out of the slit-bucket.Results show that:β has larger influence on the confluence location of rapid shock waves than Fr does; the largerβ is,the closer the confluence location is to the flip bucket outlet.After the shock waves meet,the surface water in the bucket starts to shoot,and the outflow angle reduces correspondingly asβ increases.When β =0.2 ～0.25,the distance of confluence location from the outlet accounts for 30％-40％ of the total length of the flip bucket,in which case the water tongue diffusion is more sufficient and stable.The research results enriched the understanding of hydraulic characteristics in slit-type bucket,and provide a theoretical basis for relative design.关键词
窄缝消能工/急流冲击波/收缩比/水流弗氏数/挑距Key words
slit-type energy dissipator/ rapid shock wave/ contraction ratio/ Froude number/ jet trajectory length分类
建筑与水利引用本文复制引用
杜兰,黄国兵,王春龙..窄缝急流冲击波与水舌扩散规律研究[J].长江科学院院报,2013,30(8):54-57,83,5.基金项目
国家自然科学基金项目(51279013) （51279013）
中央级公益性科研院所基本科研业务费专项项目(CKSF2013023/SL) （CKSF2013023/SL）
