Simulation of flood event in a reach of the Nile River using CCHE2D model

• Autorzy: Khan A. A. , Wang S. S. Y.
• Języki publikacji: EN

Abstrakty

EN

The impact of design flood in terms of water surface level and maximum velocity in a reach on the Nile River is studied, using a depth-averaged two-dimensional model. The reach includes a proposed site for a shipyard maintenance harbour. The CCHE2D model, a depth-averaged two-dimensional model, is selected to perform both the steady state computation, for calibration purposes, and flood routing through the reach to obtain maximum water surface level and velocity information. Manning's coefficient was obtained by matching the computed and measured water surface level in the reach under steady flow conditions. The computed results of velocity and water surface profiles agreed satisfactorily with the measured data. The verified model was then used to simulate a flood event within the same reach. Stage-discharge relationships for various sections within the reach were obtained. The peak water surface level at each section was compared with the flow stage under normal flow conditions. The peak stage was found to be well below the proposed elevation of the construction site. The estimation of the peak velocity and water surface level might be useful for bank protection work.

Słowa kluczowe

EN

river flow simulation; flood stage; stage-discharge relationship

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2003
• Tom: Vol. 50, nr 4
• Strony: 329--341
• Opis fizyczny: Bibliogr. 2 poz.

Twórcy

autor

Khan A. A.

• Department of Civil Engineering 320 Lowry Hall, Clemson University Clemson, SC 29634-0911, U.S.A.

autor

Wang S. S. Y.

• National Center for Computational Hydroscience and Engineering 102 Carrier Hall, University of Mississippi, MS 38677, U.S.A.

Bibliografia

• Wang S. S. Y., Hu K. K. (1992), Improved Methodology for Formulating Finite-Element Hydrodynamic Models, Finite Elements in Fluids, Hemisphere Publication Corporation, Washington, Vol. 8, 457-478.
• Ponce V. M., Theurer F D. (1982), Accuracy Criteria in Diffusion Routing, Journal of Hydraulic Division, ASCE, Vol. 108, 747-757.