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CFD modelling of flow characteristics in micro shock tubes

Citation

Mukhambetiyar, A and Jaeger, M and Adair, D, CFD modelling of flow characteristics in micro shock tubes, Journal of Applied Fluid Mechanics, 10, (4) pp. 1061-1070. ISSN 1735-3572 (2017) [Refereed Article]


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Copyright 2017 The Author Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) https://creativecommons.org/licenses/by-nc-nd/4.0/

DOI: doi:10.18869/acadpub.jafm.73.241.27474

Abstract

The use of micro shock tubes has become common in many instruments requiring a high velocity and temperature flow field, for example in micro-propulsion systems and drug delivery devices for medical systems. A shock tube has closed ends, and the flow is generated by the rupture of a diaphragm separating a driver gas at high pressure from a driven gas at relatively low pressure. The rupture results in the movement of a shock wave and contact discontinuity into the low-pressure gas, and an expansion wave into the high pressure gas. The characteristics of the resulting unsteady flow for micro shock tubes are not well known as the physics of such tubes includes additional phenomena such as rarefaction and complex viscous effects at low Reynolds numbers. In the present study, computational fluid dynamics (CFD) calculations are made for unsteady compressible flow within a micro shock tube using the van-Leer MUSCL scheme and the two-layer k-ε turbulence model. Novel results have been obtained and discussed of the effects of using different diaphragm pressure ratios, shock tube diameters and wall boundary conditions, namely no slip and slip walls.

Item Details

Item Type:Refereed Article
Keywords:computational fluid dynamics, micro shock tube, shock wave propagation, shock wave reflection, slip wall
Research Division:Engineering
Research Group:Manufacturing engineering
Research Field:Manufacturing engineering not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in engineering
UTAS Author:Jaeger, M (Dr Martin Jaeger)
ID Code:118194
Year Published:2017
Web of Science® Times Cited:1
Deposited By:Engineering
Deposited On:2017-07-06
Last Modified:2018-06-15
Downloads:125 View Download Statistics

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