Using wavelet and Hilbert-Huang transforms for analyzing unsteady pressure fluctuations inside an open-type shallow cavity

Dmitriy Mironov, Jiun Jih Miau, Kung Ming Chung

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Flow over an isolated shallow open-type rectangular cavity was investigated experimentally. Pressure measurements at Mach numbers 0.3, 0.5 and 0.6 were performed. Turbulent boundary layer was naturally developed along a flat plate upstream the cavity. During the experiments two test configurations were employed. Strong resonance was observed in the pressure signals obtained at M = 0.5 and M = 0.6 for the test configuration with the short upstream plate. Instantaneous oscillating characteristics were studied by Wavelet and Hilbert-Huang transforms of pressure signals. The resonant intermittency was observed for a shallow cavity flow.

Original languageEnglish
Pages (from-to)237-244
Number of pages8
JournalJournal of Aeronautics, Astronautics and Aviation
Volume41
Issue number4
Publication statusPublished - 2009 Dec

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science

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