典型文献
Aeration performances and air-water mass transfer on steep stepped weirs with horizontal and inclined steps
文献摘要：
At hydraulic structures,some strong interactions may develop between fast flowing waters and the air adjacent to the water in motion that enhance the air-water transfer of atmospheric and volatile gases in the flow.In turn,in-stream structures may contribute to the aeration and re-oxygenation during overflow.The present study aims to characterize the aeration performance of a steep stepped weir,based upon a detailed physical investigation of air-water interfacial properties across a relatively wide range of discharges.The data showed a strong fragmentation of the air-water flows,a very broad range of entrained bubbles and drops,and a large amount of particle clustering.The results implied a monotonic increase in re-aeration with increasing rate of energy dissipation,while the largest aeration efficiency was observed on the horizontal step weir chute,with the smallest on the 1V:2.33H inclined downward steps.Altogether,the study showed that a steep stepped chute can make a sizeable contribution to the re-oxygenation of the waters,although the downward inclined steps reduce the re-aeration performances.
文献关键词：
中图分类号：
作者姓名：
Yvan Arosquipa Nina;Rui Shi;Davide Wüthrich;Hubert Chanson
作者机构：
The University of Queensland School of Civil Engineering,Brisbane,Australia;Department of Hydraulic Engineering,Delft University of Technology,Delft,The Netherlands
文献出处：
引用格式：
[1]Yvan Arosquipa Nina;Rui Shi;Davide Wüthrich;Hubert Chanson-.Aeration performances and air-water mass transfer on steep stepped weirs with horizontal and inclined steps)[J].水动力学研究与进展B辑,2022(05):904-916
A类：
weirs,weir,33H
B类：
Aeration,performances,air,mass,transfer,steep,stepped,horizontal,inclined,steps,At,hydraulic,structures,some,strong,interactions,may,develop,between,fast,flowing,waters,adjacent,motion,that,enhance,atmospheric,volatile,gases,In,turn,stream,contribute,aeration,oxygenation,during,overflow,present,study,aims,characterize,upon,detailed,physical,investigation,interfacial,properties,across,relatively,wide,range,discharges,data,showed,fragmentation,flows,very,broad,entrained,bubbles,drops,amount,particle,clustering,results,implied,monotonic,increase,increasing,rate,energy,dissipation,while,largest,efficiency,was,observed,chute,smallest,1V,downward,Altogether,can,make,sizeable,contribution,although,reduce
AB值：
0.547747
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
