Research on Characteristics of Density Current Under the Action of Waves |
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作者单位: | Li Dashan,Shen Ying,Ren Rushu Chen Yao
Senior Engineer,River and Harbour Department,Nanjing Hydraulic Research Institute,Nanjing 210024 Engineer,River and Harbour Department,Nanjing Hydraulic Research Institute,Nanjing 210024 Associate Professor,Hohai University,Nanjing 210098 Master,Hohai University,Nanjing 210098 |
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摘 要: | In this paper,the characteristics of density current under the action of waves are describedwith the help of flume experiment and theoretical analysis.The study shows that turbid water under the ac-tion of the waves can present three types of motion,i.e.significant stratification,fragile stratification andstrong mixing.The motion of turbid water presents significant stratification when(H/D)/△ρ/ρ~(1/2)≤4.5,generally this state is known as density current.The formulas of motionvelocity,thickness,and discharge of density current moving on horizontal bottom are derived by use of ba-sic equations such as momemtum equation,equation of energy conservation and continuity equation offluid.The time-average velocity and the thickness of density current under the action of waves have a rela-tionship with such parameters as relative density(△ρ/ρ),wave height(H),and water depth(D).Whenthese parameters are determined,the time-average thickness and motion velocity of density current are al-so determined.The relat
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Research on Characteristics of Density Current Under the Action of Waves |
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Authors: | Li Dashan Shen Ying Ren Rushu Chen Yao
Senior Engineer River and Harbour |
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Institution: | Li Dashan,Shen Ying,Ren Rushu Chen Yao
Senior Engineer,River and Harbour Department,Nanjing Hydraulic Research Institute,Nanjing 210024 Engineer,River and Harbour Department,Nanjing Hydraulic Research Institute,Nanjing 210024 Associate Professor,Hohai University,Nanjing 210098 Master,Hohai University,Nanjing 210098 |
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Abstract: | |
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Keywords: | turbid current density current gravity current wave action motion velocity thickness |
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