非均勻沉滓耦合輸砂模式之敏感度分析

Abstract

本文旨在探討非均勻沉滓耦合輸砂模式之敏感度，並與美國工程兵團水文 工程中心所發展之非均勻沈滓輸砂模式HEC-6(1991) 做一比較。首先，介 紹模式之理論基礎與數值方法，詳述控制方程式、基本假設、數值方法、 邊界條件以及演算方法等；接著，研討不同的物理參數對模式敏感度之影 響；此外並將探討數值參數及邊界條件變化對模擬結果之影響；最後，將 比較結果作一總結。 The purpose of this study is to investigate the sensitivity of a coupled model, and compare with the model HEC-6(1991) developed by Hydrology Engineering Center, U.S. Army Corps of Engineers. First, the theoretical bases including the governing equations, assumptions, sediment transport equations, boundary conditions, and numerical schemes used are described. Then, the effect caused by the variation of physical parameters will be thoroughly analyzed to investigate the model sensitivity. And the effect of the numerical parameters and boundary conditions on model's results will also be studied. Based in the sensitivity analysis, the major effect due to the parameters will be summarized.