Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry
Air entrainment; Efficiency; Flow of water; Flow patterns; Flow visualization; Hydraulics; Oxygenation; Spillways; Velocimeters; Velocity measurement; Water aeration; Aeration effect; Aeration efficiencies; Barrier heights; Lower pressures; Particle image velocimetries; Smoothed particle hydrodynami...
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2023
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my.uniten.dspace-255872023-05-29T16:11:19Z Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry Azman A. Ng F.C. Zawawi M.H. Abas A. Rozainy M. A. Z M.R. Abustan I. Adlan M.N. Tam W.L. 57210094312 57192101900 39162217600 56893346700 57193313971 6507592187 6506136537 57213141072 Air entrainment; Efficiency; Flow of water; Flow patterns; Flow visualization; Hydraulics; Oxygenation; Spillways; Velocimeters; Velocity measurement; Water aeration; Aeration effect; Aeration efficiencies; Barrier heights; Lower pressures; Particle image velocimetries; Smoothed particle hydrodynamics; State of the art; Stepped spillways; Hydrodynamics Three-dimensional stepped spillway problems are simulated numerically using smoothed particle hydrodynamics (SPH) to visualize the flow of water along the steps and its flow dynamics. In particular, two distinct scaled-down stepped spillway models were studied with each having barrier heights of 10 mm and 25 mm, respectively. The impact of varying the height of the barrier in the design of the stepped spillway is studied in terms of it flow pattern, flow dynamics, aeration efficiency and oxygenation performances. State-of-the-art particle image velocimetry (PIV) experiment was carried out to affirm the validity of SPH findings and it turns out that both the water flow patterns attained in the SPH and PIV are quantitatively comparable. Further quantitative analysis revealed that the flow velocities in both methodologies are in great consensus. Conclusively, this has demonstrated that the capability and reliability of SPH to precisely approximate the water using finite set of particles to model the flow along the stepped spillway. Both stepped spillway configurations show nappe flow regime as the water descends down the steps. Nonetheless, vigorous hydraulic jump phenomena that is associates with the formation of turbulence and vortices is prominently observed in the configuration with larger barrier height. Decisive SPH data obtained concluded that as the barrier height increases from 10 mm to 25 mm, the water flows down the steps faster at lower pressure value and the overall aeration efficiency is improved from 1.1% to 1.2%. The usage of the higher barrier would promote the occurrence of substantial air entrainment during water swirling that will increase the power dissipation in flow. Subsequently, this while lower the power drawn to achieve the desired aeration effect. Ultimately, this study has justified the critical influence of barrier height dimension on the stepped spillway flow behavior and aeration performance. � 2020, Korean Society of Civil Engineers. Final 2023-05-29T08:11:19Z 2023-05-29T08:11:19Z 2020 Article 10.1007/s12205-020-1605-x 2-s2.0-85077585530 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077585530&doi=10.1007%2fs12205-020-1605-x&partnerID=40&md5=29021d70b9aa069bcfe5a229a09079ad https://irepository.uniten.edu.my/handle/123456789/25587 24 2 451 470 Springer Verlag Scopus |
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Air entrainment; Efficiency; Flow of water; Flow patterns; Flow visualization; Hydraulics; Oxygenation; Spillways; Velocimeters; Velocity measurement; Water aeration; Aeration effect; Aeration efficiencies; Barrier heights; Lower pressures; Particle image velocimetries; Smoothed particle hydrodynamics; State of the art; Stepped spillways; Hydrodynamics |
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57210094312 Azman A. Ng F.C. Zawawi M.H. Abas A. Rozainy M. A. Z M.R. Abustan I. Adlan M.N. Tam W.L. |
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Article |
| author |
Azman A. Ng F.C. Zawawi M.H. Abas A. Rozainy M. A. Z M.R. Abustan I. Adlan M.N. Tam W.L. |
| spellingShingle |
Azman A. Ng F.C. Zawawi M.H. Abas A. Rozainy M. A. Z M.R. Abustan I. Adlan M.N. Tam W.L. Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry |
| author_sort |
Azman A. |
| title |
Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry |
| title_short |
Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry |
| title_full |
Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry |
| title_fullStr |
Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry |
| title_full_unstemmed |
Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry |
| title_sort |
effect of barrier height on the design of stepped spillway using smoothed particle hydrodynamics and particle image velocimetry |
| publisher |
Springer Verlag |
| publishDate |
2023 |
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1806427479270752256 |