Abstract This paper presents an integrated method with a novel approach using a series of experiments to evaluate the momentum transfer coefficients of compound channels with differentially roughened boundary in the subsections. The proposed methodology effectively predicts the momentum transfer coefficients at vertical as well as horizontal interfaces of a compound channel. Calibration performance reveals that the proposed model is capable of predicting the stage-discharge results, which are well compared to other existing approaches. The error statistic is established, confirming that the present method is providing better discharge results as compared to the other approaches. The method is successfully applied to the FCF, UK Wallingford, and the river data sets of compound channels of different roughness, flow, and geometric conditions.

中文翻译：

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复合通道相邻界面处的动量传递系数

摘要 本文提出了一种新方法的综合方法，该方法使用一系列实验来评估分段中具有差异粗糙边界的复合通道的动量传递系数。所提出的方法有效地预测了复合通道的垂直和水平界面的动量传递系数。校准性能表明，所提出的模型能够预测阶段放电结果，这与其他现有方法相比很好。建立误差统计量，确认本方法与其他方法相比提供了更好的放电结果。该方法成功应用于FCF、UK Wallingford，以及不同粗糙度、流量和几何条件的复合河道的河流数据集。