Publication:
Effect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetry

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dc.citedby12
dc.contributor.authorAzman A.en_US
dc.contributor.authorNg F.C.en_US
dc.contributor.authorZawawi M.H.en_US
dc.contributor.authorAbas A.en_US
dc.contributor.authorRozainy M. A. Z M.R.en_US
dc.contributor.authorAbustan I.en_US
dc.contributor.authorAdlan M.N.en_US
dc.contributor.authorTam W.L.en_US
dc.contributor.authorid57210094312en_US
dc.contributor.authorid57192101900en_US
dc.contributor.authorid39162217600en_US
dc.contributor.authorid56893346700en_US
dc.contributor.authorid57193313971en_US
dc.contributor.authorid6507592187en_US
dc.contributor.authorid6506136537en_US
dc.contributor.authorid57213141072en_US
dc.date.accessioned2023-05-29T08:11:19Z
dc.date.available2023-05-29T08:11:19Z
dc.date.issued2020
dc.descriptionAir 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; Hydrodynamicsen_US
dc.description.abstractThree-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.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1007/s12205-020-1605-x
dc.identifier.epage470
dc.identifier.issue2
dc.identifier.scopus2-s2.0-85077585530
dc.identifier.spage451
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85077585530&doi=10.1007%2fs12205-020-1605-x&partnerID=40&md5=29021d70b9aa069bcfe5a229a09079ad
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/25587
dc.identifier.volume24
dc.publisherSpringer Verlagen_US
dc.sourceScopus
dc.sourcetitleKSCE Journal of Civil Engineering
dc.titleEffect of Barrier Height on the Design of Stepped Spillway Using Smoothed Particle Hydrodynamics and Particle Image Velocimetryen_US
dc.typeArticleen_US
dspace.entity.typePublication
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