Multi-parametric sensitivity analysis of CCHE2D for channel flow simulations in Nile River

Multi-Parametric Sensitivity Analysis (MPSA) is proposed to determine the relative importance of the different empirical parameters controlling flow field. CCHE2D which is one of the famous public unsteady-flow simulation software is applied to simulate the flow field at Elbogdady reach, at the south of Luxor staff gauge, 712.80 km upstream of Roda's staff gauge on the Nile River. The main purpose of the paper is to apply the model in the considered river reach and to assess the capabilities of CCHE2D. Moreover, the paper presents findings of the authors in determining the model's sensitivity analysis. Multi-Parametric Sensitivity Analysis results show that flow field in Nile River is controlled mainly by the bed roughness coefficient. In addition, the empirical formula of Van Rijn (1984) is found to be more efficient to calculate bed roughness. (C) 2010 International Association of Hydro-environment Engineering and Research, Asia Pacific Division. Published by Elsevier B.V. All rights reserved.