Application of Numerical Methods in Design of Hydraulic Structures

Abstract

This study was aimed to evaluate the use of numerical methods in the design of hydraulic structures and use a numerical model to validate the simulation of flow over three types of spillway which are: smooth spillway, various of step spillway, labyrinth spillway and side spillway. Numerical methods can assist in the design of hydraulic structures in the evaluation of the energy loss, calculated discharge coefficient and cavitation phenomena investigated by examining the pressure field and flow field. Designers are challenged to use numerical methods for the design of hydraulic structures due to the complexity of the specific flow field of hydraulic structures, such as the free surface flow, two-phase and multi-phase flows, turbulent flow and turbulence. In this study provide the best and efficient numerical methods for the numerical modeling of hydraulic structures, which are obtained by various researchers who have conducted research studies on numerical methods. Using the guidelines presented in this study can help designers in numerical modeling of hydraulic structures that are under all the facts and reliable models apply the results of the numerical method.Computational Fluid Dynamics (CFD) is a type of numerical model that can be used to solve problems involving fluid flow. CFD can provide a significant amount of computation time and more economical solution than a physical model. The fundamental principles for all numerical models are similar. Problems can be described, physically, by a set of partial differential equations. Then, a numerical method is used to formulate a set of algebraic equations that represent the partial differential equations.