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线性密度分层流体中垂向湍流扩散的势能模型 被引量:2

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摘要 本文研究在线性密度分层流体系统中垂向密度界面的无平均剪切湍流扩散规律,从分析湍流动能方程出发,提出一种湍流扩散的势能模型,得到湍流扩散距离随时间的变化以及无量纲扩散速率与当地Richardson数的关系.同时进行了实验检验,其结果与理论预测符合良好.
作者 鄂学全 王薇
出处 《中国科学(A辑)》 CSCD 1992年第7期735-742,共8页 Science in China(Series A)
基金 国家自然科学基金
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同被引文献38

  • 1鄂学全,王薇.POTENTIAL ENERGY MODEL FOR TURBULENT ENTRAINMENT ACROSS DENSITY INTERFACE IN A LINEARLY STRATIFIED FLUID[J].Science China Mathematics,1992,35(12):1475-1485. 被引量:1
  • 2贾俊梅,邱翔,刘宇陆.稳定分层流动中湍流动量逆梯度输运的数值研究[J].水动力学研究与进展(A辑),2005,20(4):426-435. 被引量:3
  • 3Richardson LE The supply of energy from and to atmospheric ed- dies. Proceedings of the Royal Society of London, 1920, A97: 354- 373.
  • 4Taylor GI. Effect of variation in density on the stability of super- posed streams of fluid. Proceedings of the Royal Society of London, 1931, A132 (820): 499-523.
  • 5Goldstein S. On the stability of superposed streams of fluids of dif- ferent densities. Proceedings of the Royal Society of London, 1931, A132 (820): 524-548.
  • 6Synge JL. The stability of heterogeneous liquids. Transactions of the'Royal Society of Canada, 1933, XXVII (3): 1-8.
  • 7Tamer JS. Turbulent entrainment: the development of the entrain- ment assumption and its application to geophysical flows. Journal of Fluid Mechanics, 1986, 173:431-471.
  • 8Batchelor GK. Heat convection and buoyancy effects in fluids. Quarterly Journal of the Royal Meteorological Society, 1954, 80 (345): 339-358.
  • 9Morton BR, Taylor GI, Turner JS. Turbulent gravitational convec- tion from maintained and instantaneous sources. Proceedings of the Royal Society of London, 1956, A234:1-23.
  • 10Rouse H, Dodu J. Turbulent diffusion across a density discontinuity. La Houille Blanche, 1955, 4:522-532.

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