Water spilling fluid dynamic analysis on sector gate opening in dam spillway | [Science International • 2020]

Author(s):

1. N H Hassan: Department of Civil Engineering,Universiti Tenaga Nasional, 43000 Kajang, Selangor,Malaysia

2. M H Zawawi: Department of Civil Engineering,Universiti Tenaga Nasional, 43000 Kajang, Selangor,Malaysia

3. M A Abas: School of Civil Engineering,Universiti Sains Malaysia, Engineering Campus, Penang,Malaysia

4. M R M Radzi: Generation Division,Tenaga Nasional Berhad

5. A Hassani: Generation Division,Tenaga Nasional Berhad

6. W N Yusairah: Department of Civil Engineering,Universiti Tenaga Nasional, 43000 Kajang, Selangor,Malaysia

7. F Nurhikmah: Department of Civil Engineering,Universiti Tenaga Nasional, 43000 Kajang, Selangor,Malaysia

8. Nurhanani A Aziz: Department of Civil Engineering,Universiti Tenaga Nasional, 43000 Kajang, Selangor,Malaysia

9. Aisyahira Melan: Department of Civil Engineering,Universiti Tenaga Nasional, 43000 Kajang, Selangor,Malaysia

Abstract:

This study analyses the fluid dynamic on the sector gate in the dam spillway with a 16 ft gap opening. The parameters determined in this study are velocity, pressure, and streamline. A 3D Computational Fluid Dynamics (CFD) model of dam spillway structure and fluid boundary conditions were developed using Ansys FLUENT. The result of the CFD model shows that the highest velocity value which is 14.8 m/s and the largest hydraulic jump occurred in the middle of the dam spillway between the two energy dissipators. The hydraulic jump type that occurred which is oscillating jump is determined by the Froude value of 2.988. High velocity may contribute to the large hydraulic jump that then gives a more damaging effect to the stilling basin surface. Future mitigation measures have to take to ensure the sustainability of structural integrity.

Page(s): 261-265

DOI: DOI not available

Published: Journal: Science International, Volume: 32, Issue: 3, Year: 2020

Keywords:

pressure , hydraulic jump , Dam spillway , Computational Fluid Dynamics CFD

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