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Experimental Study on the Air Concentration Distribution of Aerated Jet Flows in a Plunge Pool

State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
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Water 2018, 10(12), 1779; https://doi.org/10.3390/w10121779
Received: 20 October 2018 / Revised: 29 November 2018 / Accepted: 30 November 2018 / Published: 4 December 2018
(This article belongs to the Special Issue Advances in Hydraulics and Hydroinformatics)
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Abstract

There is a lack of knowledge on the air concentration distribution in plunge pools affected by aerated jets. A set of physical experiments was performed on vertical submerged aerated jet flows impinging a plunge pool. The air concentration distribution in the plunge pool was analyzed under different inflow air concentrations, flow velocities, and discharge rate conditions. The experimental results show that the air concentration distribution follows a power-law along the jet axis, and it is independent of the initial flow conditions. A new hypothetical analysis model was proposed for air diffusion in the plunge pool, that is, the air concentration distribution in the plunge pool is superposed by the lateral diffusion of three stages of the aerated jet motion. A set of formulas was proposed to predict the air concentration distribution in the plunge pool, the results of which showed good agreement with the experimental data. View Full-Text
Keywords: submerged jets; aerated flow; air concentration; plunge pool submerged jets; aerated flow; air concentration; plunge pool
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Xu, W.; Chen, C.; Wei, W. Experimental Study on the Air Concentration Distribution of Aerated Jet Flows in a Plunge Pool. Water 2018, 10, 1779.

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