A three-phase flow simulation of local scour caused by a submerged wall jet with a water-air interface

doi:10.1016/j.advwatres.2017.07.017

淡江大學機構典藏 > 工學院 > 水資源及環境工程學系暨研究所 > 期刊論文 > Item 987654321/115782

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題名:	A three-phase flow simulation of local scour caused by a submerged wall jet with a water-air interface
作者:	Cheng-Hsien Lee;Conghao Xu;Zhenhua Huang
關鍵詞:	Three-phase modeling;Volume of fluid;Sediment transport;Scour process;Sediment avalanche
日期:	2017-07-25
上傳時間:	2019-02-20 12:10:25 (UTC+8)
摘要:	Interactions between fluid and hydraulic structures and the resulting bed scouring are complex phenomena that involve three phases: water, air and sediment. This study presents a new rheology-based three-phase flow model that can (i) track the water-air interface in the presence of suspended sediment and (ii) predict the local scour caused by submerged wall jet. A modified volume-of-fluid (VOF) method was used to track the water-air interface, and a modified k-ϵ turbulence model was employed to capture important features of the turbulent flow, including turbulence modulation due to fluid-sediment interaction. The three-phase model was first used to study the sediment transport in open-channel flows in order to evaluate the performance of two models for particle response time, and then employed to simulate the scouring process downstream a submerged wall jet issued from a sluice gate. The simulated bed profiles showed good agreement with the measured. It was demonstrated that the three-phase model could capture important dynamic features such as sediment avalanche.
關聯:	Advances in Water Resources 129, p.373-384
DOI:	10.1016/j.advwatres.2017.07.017
顯示於類別:	[水資源及環境工程學系暨研究所] 期刊論文

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