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On the temporal analysis of acoustic waves using schlieren imaging

Jagadeesh, C., Gowree, E. R., Jadidbonab, H. & Atkin, C. J. ORCID: 0000-0003-2529-1978 (2018). On the temporal analysis of acoustic waves using schlieren imaging. Measurement, 116, pp. 507-513. doi: 10.1016/j.measurement.2017.11.018


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.

Publication Type: Article
Additional Information: © 2018, Elsevier. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Publisher Keywords: Acoustic waves, Schlieren technique, Image processing, Underexpanded jets
Departments: School of Science & Technology > Engineering
[thumbnail of Measurement_Revised_Manuscript_Schlieren Imaging Technique_Nov2017Jagadeesh et al.pdf]
Text - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

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