【摘要】 本文依据紊流边界层的动量方程和连续方程,利用流速分布的对数律,推导了陡坡紊流边界层的发展厚度δ和水深h的计算式,并与原型观测资料进行了对比。结果证明,本文所推公式和原型观测资料完全一致,同时,本文还推导了陡坡摩阻流速的计算式,所得成果对计算陡坡的切应力提供了依据。更多还原

【Abstract】 In this paper, starting from the Momentum Integral Equation and Continuity Equation, the formulas about turbulent boundary layer thickness δ and water depth h of a steep channel flow are deduced by making use of logarithmic velocity law. The results calculated by the formulas show a good agreement with that of some prototype observations. In addition, friction velocity of a steep channel flow is analysed in this paper and viscous shear stress of a steep channel flow could be calculated by the analysis.更多还原