Evaluation of numerical models of kinematic wave and diffusion in simulation of flood flow

hadis goodarzi¹ majid heydari²

1) Master of Hydraulic structures Engineering, Bu-Ali Sina University, Hamedan
2) Assistant Professor, Department of Water Science and Engineering, Bu-Ali Sina University, Hamedan

IOI Code : XYHF-BHBGF
Publication : 16th National Hydraulic Conference (16hydro.ir)
Abstract :
    Awareness of the intensity and profile of flood flow is done by flood routing. The complete solution of the saint-venant equations in unsteady flow analysis is usually a complex thing requiring the use of computers and developed business models for this work. In contrast to this complex method, various simplified and approximate hydroulic and hydrological methods have been developed which, with consideration of some assumptions, can routing the flood in the rivers. In this study, the validity and accuracy of the kinematic wave method and the mixing cell method and Crank Nicolson method, which are used for diffusion wave solving methods, were compared in a case study. The results of this study indicate the greater ability of the mixed cell method and the high correlation coefficient the resulting data from it with the observed output hydrograph data of the sample of study.

Keywords : flood routing saint venant equations kinematic wave mixing cell method crank nicolson method