Experimental study on oxygen transfer capacity of water jets discharging into turbulent cross-flow
Abstract
Plunging water jets are used for oxygenation purposes due to their inherent advantages such as simplicity, energy efficiency, and low operational cost. Specifically, these provide an efficient gas-liquid interfacial area for dissolving oxygen in water. Oxygen transfer by plunging jets into stagnant water has received considerable attention; however, the oxygenation capacity of plunging water jets discharging into turbulent cross-flow has received limited attention. The flow characteristics such as volumetric oxygen transfer coefficient and standard oxygen transfer efficiency are evaluated considering water jet to cross-flow velocity ratio, jet fall height, cross-flow depth, and jet impact angle. Two equations are proposed for estimating the oxygen transfer rate for a single plunging jet in a turbulent cross-flow. Moreover, the dynamic behavior of the resulting two-phase air-water flow is investigated with the aid of flow visualization.
Keywords
Dissolved oxygen, Reoxygenation, Standard oxygen transfer efficiency, Volumetric oxygen transfer coefficient, Water jet in cross-flow.
Document Type
Journal Article
Date of Publication
2017
Publication Title
Journal of Environmental Engineering
Publisher
ASCE
School
School of Engineering
RAS ID
24077
Copyright
subscription content
Comments
Jahromi, M. E., & Khiadani, M. (2017). Experimental study on oxygen transfer capacity of water jets discharging into turbulent cross-flow. Journal of Environmental Engineering, 143(6), article 04017007. https://doi.org/10.1061/(ASCE)EE.1943-7870.0001194