| 明渠中变密度变粘度牛顿流体紊动基本方程式 |
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| 引用本文： | 郑永刚,方锋,李桂芬.明渠中变密度变粘度牛顿流体紊动基本方程式[J].应用数学和力学,1997,18(9):825-831. |
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| 作者姓名： | 郑永刚 方锋 李桂芬 |
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| 作者单位： | 1.石油大学(华东), 山东东营 257062; |
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| 摘 要： | 本文利用Navier－Stokes方程及雷诺时均法则,导出了变密度变粘度牛顿流体的紊动微分方程式,并进一步导出了变密度变粘度牛顿流体在明渠中紊流流动时的运动微分方程式.文中首次提出了密度紊动应力与粘度紊动应力的概念.
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| 关 键 词： | 明渠 变粘度流体 紊动 基本方程式 牛顿流体 |
| 收稿时间： | 1996-05-30 |
Basic Equations of Turbulent Flow for Variable Density and Variable Viscosity Newtonian Fluid in Open Channel |
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| Zheng Yonggang.Basic Equations of Turbulent Flow for Variable Density and Variable Viscosity Newtonian Fluid in Open Channel[J].Applied Mathematics and Mechanics,1997,18(9):825-831. |
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| Authors: | Zheng Yonggang |
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| Institution: | 1.University of Petroleum(East China), Dongying, Shandong 257062, P. R. China;2.Sichuan Union University, Chengdu 610065, P. R. China;3.China Institute of Water Resources and Hudropower Research, Beijing 100044, P. R. China |
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| Abstract: | In this paper, using Navier-Stokes equations and Reynolds time-averaged rules , the turbulent motional differential eqyatuibsof variable density and variable viscosity Newtonian fluid have been presented, and the turbulent motional differential equations of variable density and variable viscosity Newtonian fluid in open channel have been further proposed. The concepts of the density turbulence stress and the viscosityturbulence stress have been presented in the paper for the first time. |
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| Keywords: | open channel variable viscosity fluid turbulence basic equation Newtonian fluid |
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