Geometrical Optimization of a Venturi-Type Microbubble Generator Using CFD Simulation and Experimental Measurements

Wilson, Dillon Alexander and Pun, Kul and Ganesan, Poo Balan and Hamad, Faik (2021) Geometrical Optimization of a Venturi-Type Microbubble Generator Using CFD Simulation and Experimental Measurements. Designs, 5 (1). p. 4. ISSN 2411-9660

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Official URL: https://doi.org/10.3390/designs5010004

Abstract

Microbubble generators are of considerable importance to a range of scientific fields from use in aquaculture and engineering to medical applications. This is due to the fact the amount of sea life in the water is proportional to the amount of oxygen in it. In this paper, experimental measurements and computational Fluid Dynamics (CFD) simulation are performed for three water flow rates and three with three different air flow rates. The experimental data presented in the paper are used to validate the CFD model. Then, the CFD model is used to study the effect of diverging angle and throat length/throat diameter ratio on the size of the microbubble produced by the Venturi-type microbubble generator. The experimental results showed that increasing water flow rate and reducing the air flow rate produces smaller microbubbles. The prediction from the CFD results indicated that throat length/throat diameter ratio and diffuser divergent angle have a small effect on bubble diameter distribution and average bubble diameter for the range of the throat water velocities used in this study. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Item Type: Article
Uncontrolled Keywords: CFD simulation; venture-type microbubble generator; geometrical optimization; bubble breakup
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 03 May 2021 08:20
Last Modified: 03 May 2021 08:20
URI: http://eprints.um.edu.my/id/eprint/25939

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