明渠糙率对水深和流速影响的概率分析

本文从糙率的随机性质出发,以典型的二度明渠均匀流为对象,对水深和流速的随机变化进行研究。给出了水深和流速的概率、数学期望和方差,从而改进了传统的确定性认识和水力计算,可供实际应用。文末举出了算例。

Probabilistic Analysis on the Influence of Depth and Velocity by the Roughness in Open Channel Flow

In this paper a study of random variation of depth and velocity is performed by means of the random nature of roughness in a typical two dimension uniform flow of open channel. Probabilities, means and deviations of the depth and the velocity that improve the traditional conceptions and calculations have been derivated. The probabilistic analysis can be applied in practice and an example is given in this paper.