| Basic Laws in Mechanics of Turbulent Flows |
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| 作者单位： | Dou Guoren
Academician of Chinese Academy of Sciences，Honorary Director of Nanjing Hydraulic Research Institute，Nanjing 210024 |
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| 摘 要： | - Turbulent flow is a basic form of fluid motion widely observed in nature. In hydraulic engineering, especially in the study of sediment movement, turbulence is a key problem. In this paper, based on the stochastic theory of wall turbulence developed by the author and the results by other investigators, fluc-tuation and mean structures and drag coefficient for Newtonian and drag reduction flows in all states (laminar, transitional, turbulent) and in all regions (smooth, transitional, rough) are theoretically discussed in detail. General laws for laminar and turbulent flows obtained by the author are verified by the experimental results obtained by others, and there is good agreement between them.
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Basic Laws in Mechanics of Turbulent Flows |
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| Authors: | Dou Guoren
Academician of Chinese Academy of Sciences Honorary Director of Nanjing Hydraulic Research Institute Nanjing |
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| Institution: | Dou Guoren
Academician of Chinese Academy of Sciences,Honorary Director of Nanjing Hydraulic Research Institute,Nanjing 210024 |
| |
| Abstract: | - Turbulent flow is a basic form of fluid motion widely observed in nature. In hydraulic engineering, especially in the study of sediment movement, turbulence is a key problem. In this paper, based on the stochastic theory of wall turbulence developed by the author and the results by other investigators, fluc-tuation and mean structures and drag coefficient for Newtonian and drag reduction flows in all states (laminar, transitional, turbulent) and in all regions (smooth, transitional, rough) are theoretically discussed in detail. General laws for laminar and turbulent flows obtained by the author are verified by the experimental results obtained by others, and there is good agreement between them. |
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| Keywords: | turbulent flow laminar to turbulent flow stochastic model velocity distribution drag coefficient |
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