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本文提出了明渠兰维水流的数学模型系统的参数估计方法,该方法不需要(主流)流速资料。在研究明渠主流,副流、剪应力分布、渠道特征参数(糙率、底坡和几何形状)和其它控制整个输运过程的有关变量之间复杂的相互作用时,它扩大了数学模型的适用范围和精确性。应用这一方法对矩形明渠的三维水流结构进行了研究,在不同的曼宁系数 n,宽深比和渠底坡情况下,对主流,副流以及剪应力分布之间的相互作用作了探索。所得结果对明渠水力学中的许多问题定量地给出了解答。
This paper presents a method to estimate the parameters of a mathematical model system of the open channel drainage, which does not require (mainstream) velocity data. It expands the applicability of the mathematical model when studying the complex interactions between open channel mainstream, secondary flow, shear stress distribution, channel characterization parameters (roughness, slope, and geometry) and other variables governing the overall transport process Range and accuracy. This method is used to study the three-dimensional flow structure of a rectangular open channel. With the different Manning coefficient n, aspect ratio and bottom slope, the interaction between the mainstream, the secondary flow and the distribution of shear stress is explored . The results give quantitative answers to many problems in open channel hydraulics.