Numerical Investigation of Hydraulic Characteristics on 3D Unsymmetrical Smooth Spillway

Mohd Safarul Izmi Saidin; Mohd Sharizal Abdul Aziz; Mohd Remy Rozainy Mohd Arif Zainol

Authors

Mohd Safarul Izmi Saidin School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Mohd Sharizal Abdul Aziz School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia
Mohd Remy Rozainy Mohd Arif Zainol School of Civil Engineering, Universiti Sains Malaysia, Engineering Campus, 14300 Nibong Tebal, Pulau Pinang, Malaysia

Keywords:

Smooth spillway, volume of fluid, numerical simulation, hydraulic characteristics

Abstract

In recent decades, several studies of hydraulic characteristics of spillway have been conducted. At the initial stage of design, hydraulic characteristics of spillway shall be investigated thoroughly either experimentally or numerically to provide better insight of flow behavior and predicting any critical area which can endanger the structure and the environment. The present paper focused on the numerical study of free surface flow over the three dimensional (3D) unsymmetrical smooth spillway. This paper aims to investigate hydraulic characteristics by using 3D numerical simulation interms of water surface profiles, surface velocity profile and velocity profile at the downstream. The governing equation of Reynolds-averaged Navier-Stokes (RANS) equation is numerically solved using volume of fluid (VOF) method and Realizable κ-ɛ (RKE) turbulence model. The numerical simulation successfully estimated hydraulic characteristics and show a good agreement in terms of profile pattern compared to establishpapers.