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Volume 10 Issue 1
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Xiao Yong, Jin Zhongqing. Power-Type Velocity Distribution Formula and Skin-Friction Laws for Wall Turbulence:(Ⅱ) Hydraulic Transition Rough Region[J]. Advances in Water Science, 1999, 10(1): 64-68.
Citation: Xiao Yong, Jin Zhongqing. Power-Type Velocity Distribution Formula and Skin-Friction Laws for Wall Turbulence:(Ⅱ) Hydraulic Transition Rough Region[J]. Advances in Water Science, 1999, 10(1): 64-68.
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Power-Type Velocity Distribution Formula and Skin-Friction Laws for Wall Turbulence:(Ⅱ) Hydraulic Transition Rough Region

  • Hohai University, Nanjing 210098

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  • Received Date: March 03, 1997
  • Revised Date: December 23, 1997
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    • Abstract
  • Based on a new incomplete simiarity assumption of the simiarity theory and the structure of the asymmetric passing flows, a generalized power-type velocity distribution formula is proposed for hydraulic smooth region, hydraulic transition rough region and hydraulic rough region wallturbulence. Corresponding to the generalized velocity distribution formula, a skin-friction law is derived. Both the velocity distribution formula and the skin-friction law are compared with the classic Nikuradre experimental data.
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    • References (1)
  • [1]
    1 Barenblatt G I. Scaling laws for fully developed turbulent shear flows. Part 1. Basic hypotheses and analsis J Fluid Mech. 1993, 248: 513～520
    2 Barenblatt G I, Prostokishin V M. Scaling laws for fully developed turbulent shear flows. Part 2. Processing of experimental data J Fluid Mech. 1993, 248: 521～529
    3 肖勇,金忠青.固壁紊流流速分布指数型公式和阻力规律-(Ⅰ)过渡区.水科学进展.1997,8(2):148～153
    4 窦国仁.明渠和管道紊流.中国科学.1980,11:1115～1124
    5 万声淦.近壁紊流的绕流结构的实验研究.科学通报.1981,26(18):1145～1148
    6 尼库拉兹著.粗糙管中水流的规律.张瑞瑾译.北京:水利出版社,1957.45P
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