On the temporal analysis of acoustic waves using schlieren imaging

Jagadeesh, Chetan, Gowree, Erwin R., Jadidbonab, Hesamaldin and Atkin, Christopher J. ORCID: https://orcid.org/0000-0003-2529-1978 (2018) On the temporal analysis of acoustic waves using schlieren imaging. Measurement: Interdisciplinary Research and Perspectives, 116. pp. 507-513. ISSN 0263-2241

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Abstract

The primary objective of the present study was to develop a quantitative schlieren-imaging technique that can be used to study the dynamics of instability waves. The technique was initially validated by optically capturing a controlled acoustic wave generated by a compression driver and excellent agreement was obtained with microphone measurements. An underexpanded jet was considered as an ideal test case due to the complexity and multitude of instability mechanism. Further analysis of the underexpanded jet demonstrated that this technique can be used to capture the very high frequency mode related to the phenomenon of screech.

Item Type:	Article
Uncontrolled Keywords:	acoustic waves,schlieren technique,image processing,underexpanded jets,screech,jets
Faculty \ School:	Faculty of Science > School of Engineering (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Fluids & Structures Faculty of Science > Research Groups > Sustainable Energy
Depositing User:	LivePure Connector
Date Deposited:	30 May 2020 00:13
Last Modified:	07 Nov 2024 12:42
URI:	https://ueaeprints.uea.ac.uk/id/eprint/75406
DOI:	10.1016/j.measurement.2017.11.018

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