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Scaling of Microbubble Generation in a T-junction
Citation
Ailwood, A and Venning, JA and Barbaca, L and Russell, PS and Pearce, BW and Brandner, PA, Scaling of Microbubble Generation in a T-junction, Proceedings of the 23rd Australasian Fluid Mechanics Conference, 04-08 December 2022, Sydney, pp. AFMC2022-255. ISSN 2653-0597 (2022) [Refereed Conference Paper]
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Official URL: http://www.afms.org.au/proceedings/23.html
Abstract
Microbubble generation in a microfluidic T-junction was investigated in the context of artificial
nuclei seeding of hydrodynamic facilities. Microbubble size distribution and production rate were
investigated for a range of air, water and outlet pressures using high-speed shadowgraphy. The
generator was found to produce a train of monodisperse bubbles approximately 100um in diameter
across a range of operating conditions. The only exception to this being the cases with a large difference
between the air and water supply pressures where bubble coalescence was prominent. An empirical
scaling law depicting the dependence of bubble diameter on the operational conditions was developed
by fitting all the data using least-squares regression. Bubble production frequency was found to
exhibit a quadratic increase with an increase in the difference between the air supply and the outlet
pressure. Production frequencies in the range 0 kHz to 3.5 kHz were observed across the range of
investigated conditions. The reported work demonstrates the T-junction to be a robust device for
monodisperse microbubble generation and a useful tool for experimental modelling of nucleation
effects in hydrodynamic facilities.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | microbubble generation, microfluidics, T-junction |
| Research Division: | Engineering |
| Research Group: | Maritime engineering |
| Research Field: | Ship and platform structures (incl. maritime hydrodynamics) |
| Objective Division: | Expanding Knowledge |
| Objective Group: | Expanding knowledge |
| Objective Field: | Expanding knowledge in engineering |
| UTAS Author: | Ailwood, A (Mr Aaron Ailwood) |
| UTAS Author: | Venning, JA (Dr James Venning) |
| UTAS Author: | Barbaca, L (Dr Luka Barbaca) |
| UTAS Author: | Russell, PS (Mr Patrick Russell) |
| UTAS Author: | Pearce, BW (Dr Bryce Pearce) |
| UTAS Author: | Brandner, PA (Professor Paul Brandner) |
| ID Code: | 154806 |
| Year Published: | 2022 |
| Deposited By: | NC Maritime Engineering and Hydrodynamics |
| Deposited On: | 2023-01-09 |
| Last Modified: | 2023-01-19 |
| Downloads: | 0 |
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