A Computer Model for the Hydraulic Analysis of Open Channel Cross Sections

A Computer Model for the Hydraulic Analysis of Open Channel Cross Sections

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Irrigation and hydraulic engineers are often faced NUTRA SEA + D with the difficulty of tedious trial solutions of the Manning equation to determine the various geometric elements of open channels.This paper addresses the development of a computer model for the design of the most commonly used channel-sections.The developed model is intended as an educational tool.It may be applied to the hydraulic design of trapezoidal , rectangular, triangular, parabolic, round-concered rectangular, and circular cross sections.

Two procedures were utilized for the solution of the encountered implicit equations; the Newton-Raphson and the Regula-Falsi methods.In order to initiate the solution process , these methods require one and two initial guesses, respectively.Tge result filter wire revealed that the Regula-Flasi method required more iterations to coverage to the solution compared to the Newton-Raphson method, irrespective of the nearness of the initial guess to the actual solution.The average number of iterations for the Regula-Falsi method was approximately three times that of the Newton-Raphson method.