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Volume 17, Issue 33 (5-2021)                   Marine Engineering 2021, 17(33): 135-144 | Back to browse issues page

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Ghayour S, Hamidi M, Abessi O. Investigation of Dilution, Frequency, and Intensity of Turbulent Flow in Submerged Disposal of Brine. Marine Engineering 2021; 17 (33) :135-144
URL: http://marine-eng.ir/article-1-903-en.html
Investigation of Dilution, Frequency, and Intensity of Turbulent Flow in Submerged Disposal of Brine
Shiva Ghayour1 , Mehdi Hamidi * 1, Ozeair Abessi1
1- Faculty of Civil Engineering, Babol Noshirvani University of Technology
Abstract:   (1858 Views)
In recent decades, brine discharge into the water bodies and desalination plants have increased dramatically all over the world. In this research, behavior of turbulent flow in submerged disposal of saline wastewater produced by coastal desalination with a nozzle oriented upwards at 45o to the horizontal was investigated by employing a three-dimensional laser-induced fluorescent (3DLIF) system. After obtaining experimental pictures and converting them to ASCI files, change of turbulent flow in jet-to-plume transition was analyzed through cross-sectional profiles of concentration, turbulent intensity and flow intermittency in different distances from the discharge nozzle with code development in MATLAB software. The results show that in this regime transition, agreement with Gaussian distribution in mean concentration profiles decreases for the inner side of discharged flow in the plume region, Concentration intensity increases and zero-intermittency zone decreases. Also, changes in slope of mean concentration, concentration fluctuation intensity and intermittency along the centerline increase dramatically.
Keywords: Desalination Wastewater Discharge, Submerged Jet, Plume, Negative Buoyancy, Turbulent Flow
Full-Text [PDF 4785 kb]   (719 Downloads)    
Type of Study: Research Paper | Subject: Environmental Study
Received: 2021/04/26 | Accepted: 2021/07/4
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