The use of wavelet transform for the correlation analysis of boundary-layer pulsations
- Authors: Polivanov P.A.1, Gromyko Y.V.1, Bountin D.A.1, Maslov A.A.1, Sidorenko A.A.1
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Affiliations:
- Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
- Issue: Vol 24, No 6 (2017)
- Pages: 941-944
- Section: Brief Communications
- URL: https://journals.rcsi.science/1531-8699/article/view/217218
- DOI: https://doi.org/10.1134/S0869864317060130
- ID: 217218
Cite item
Abstract
As a rule, experimental studies at hypersonic Mach numbers are carried out in short-duration wind tunnels. Under such conditions, data on boundary-layer pulsations are primarily measured by surface pressure sensors. There are many factors affecting the level of pulsations at model walls; that is why the cross-correlation analysis is often invoked to analyze the development of wave packets in boundary layer. However, the standard correlation analysis very often fails in providing the possibility to trace the evolution of wave packets. In the present publication, we propose a new method for obtaining cross-correlation data based on the wavelet transform.
About the authors
P. A. Polivanov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Author for correspondence.
Email: polivanov@itam.nsc.ru
Russian Federation, Novosibirsk
Yu. V. Gromyko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: polivanov@itam.nsc.ru
Russian Federation, Novosibirsk
D. A. Bountin
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: polivanov@itam.nsc.ru
Russian Federation, Novosibirsk
A. A. Maslov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: polivanov@itam.nsc.ru
Russian Federation, Novosibirsk
A. A. Sidorenko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS
Email: polivanov@itam.nsc.ru
Russian Federation, Novosibirsk