Preliminary Investigation of Sound Generation in Scramjets

Gibbons, N., Wheatley, V. and Doolan, C. (2016). Preliminary Investigation of Sound Generation in Scramjets. In: Proceedings of 20th Australasian Fluid Mechanics Conference. 20th Australasian Fluid Mechanics Conference, Perth, Western Australia, (). 5-8 December 2016.

Author Gibbons, N.
Wheatley, V.
Doolan, C.
Title of paper Preliminary Investigation of Sound Generation in Scramjets
Conference name 20th Australasian Fluid Mechanics Conference
Conference location Perth, Western Australia
Conference dates 5-8 December 2016
Convener Australasian Fluid Mechanics Society
Proceedings title Proceedings of 20th Australasian Fluid Mechanics Conference
Place of Publication Victoria, Australia
Publisher Australasian Fluid Mechanics Society
Publication Year 2016
Sub-type Fully published paper
Open Access Status Not yet assessed
ISBN 9781740523776
Total pages 4
Collection year 2017
Language eng
Abstract/Summary Aeroacoustic noise generation in scramjet engines is investigated, by analyzing Hybrid RANS/LES simulations of a simplified engine-like geometry. Pressure data collected over a statistically long period are analyzed in the frequency domain, revealing a number of modes in the 100-200 kHz range which contribute significantly to the overall fluctuating noise level. Visualization of fluctuating quantities also shows a sequence of waves being generated by the fuel injection process which seem to propagate acoustically into the surrounding flow. This analysis shows that the LES methodology employed is capable of resolving the low-amplitude waves found in acoustics problems, and justifies future research to evaluate the accuracy the technique against experimental and theoretical results.
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collections: School of Mechanical & Mining Engineering Publications
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Created: Fri, 10 Feb 2017, 22:16:30 EST by Dr Vincent Wheatley on behalf of School of Mechanical and Mining Engineering