Author(s): Salah Kouchakzadeh; Alireza Vatankhah
Linked Author(s): Salah Kouchakzadeh
Keywords: No Keywords
Abstract: The perturbation solution was previously applied for solving the ordinary non-linear differential equations of the spatially varied flows with increasing discharge. The momentum correction coefficient, β, was taken as unity in previous studies which result in highly approximate solutions. In this study, the momentum correction coefficient is considered in the governing equation and a modified perturbation solution for the spatially varied flow iss obtained. Comparison between computed and observed water surface profiles indicated that a mean value of β =1.52 could be obtained for this flow condition. The computed water surface profiles using the proposed mean value reasonably fits the observed data. Consequently, the use of the proposed mean value is recommended for the design purposes.
Year: 2001