Bubble dynamics in a diesel exhaust wet scrubber

Abdulwahid, A., Situ, R., Brown, Ri., and Lin, W. (2020) Bubble dynamics in a diesel exhaust wet scrubber. In: Proceedings of the 22nd Australasian Fluid Mechanics Conference. 258. From: AFCM2020: 22nd Australasian Fluid Mechanics Conference, 7-10 December 2020, Brisbane, QLD, Australia.

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A wet scrubber is an air pollution removal device that eliminates particulate matter and acid gases from a diesel engine. The exhaust gas enters the scrubber beneath the liquid surface, causing a reduction in gas temperature and increases the relative humidity of scrubber outlet. In this study, bubble motion was captured with a high-speed video system in 16 test conditions. Heat transfer analysis was used to investigate the direct interaction between the bubbles and their surrounding liquid. The experimental results confirmed that there are three flow regions at the low inlet gas flow rate: inlet, bulk and exit region (at exit). At the departing region, the bubble diameter depended on the inlet gas volumetric flow rate. The bubble number ratio was a function of the inlet gas Reynolds number. The heat transfer between the bubbles and liquid depended on the inlet gas temperature ratio.

Item ID: 65411
Item Type: Conference Item (Research - E1)
ISBN: 978-1-74272-341-9
Keywords: Wet Scrubber, Bubble Dynamics, Heat transfer, Gas-Liquid Two-phase flow
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Copyright Information: Creative Commons Attribution noncommercial
Funders: Australian Research Council (ARC)
Projects and Grants: ARC Linkage grant LP110200158
Date Deposited: 13 Jan 2021 23:38
FoR Codes: 40 ENGINEERING > 4012 Fluid mechanics and thermal engineering > 401205 Experimental methods in fluid flow, heat and mass transfer @ 60%
40 ENGINEERING > 4012 Fluid mechanics and thermal engineering > 401299 Fluid mechanics and thermal engineering not elsewhere classified @ 40%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%
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