Two-point correlations of the near and far-field pressure in a transonic jet

Joseph W. Hall, Jeremy Pinier, André Hall, Mark Glauser

Research output: Chapter in Book/Report/Conference proceedingConference contribution

22 Scopus citations

Abstract

To better understand the relationship between the near-field pressure and the acoustic far-field, multi-point measurements of the near-field pressure around the periphery of a cold Mach 0.85 round jet are compared to simultaneous multi-point farfield acoustic pressure measurements. The results indicate that the near-field pressure is low dimensional and the instantaneous contribution from both azimuthal mode 0 and 1 is sufficient to accurately recover the dynamics of the near-field pressure. Correlations of the acoustic far-field with the contribution of each azimuthal mode to the near field pressure, however, indicate that only azimuthal mode 0 is well correlated with the far-field pressure, suggesting that the acoustic source in the jet is predominantly axisymmetric. The correlation of the higher azimuthal pressure modes with the far-field acoustic pressure is extremely poor suggesting that the axisymmetric source is weakened by the presence of higher azimuthal modes in the near field of the jet.

Original languageEnglish (US)
Title of host publicationProceedings of ASME Fluids Engineering Division Summer Meeting 2006, FEDSM2006
PublisherAmerican Society of Mechanical Engineers
Pages479-485
Number of pages7
ISBN (Print)0791847500, 9780791847503
DOIs
StatePublished - 2006
Event2006 ASME Joint U.S.- European Fluids Engineering Division Summer Meeting, FEDSM2006 - Miami, FL, United States
Duration: Jul 17 2006Jul 20 2006

Publication series

NameProceedings of ASME Fluids Engineering Division Summer Meeting 2006, FEDSM2006
Volume2 FORUMS

Other

Other2006 ASME Joint U.S.- European Fluids Engineering Division Summer Meeting, FEDSM2006
CountryUnited States
CityMiami, FL
Period7/17/067/20/06

ASJC Scopus subject areas

  • Engineering(all)

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    Hall, J. W., Pinier, J., Hall, A., & Glauser, M. (2006). Two-point correlations of the near and far-field pressure in a transonic jet. In Proceedings of ASME Fluids Engineering Division Summer Meeting 2006, FEDSM2006 (pp. 479-485). (Proceedings of ASME Fluids Engineering Division Summer Meeting 2006, FEDSM2006; Vol. 2 FORUMS). American Society of Mechanical Engineers. https://doi.org/10.1115/fedsm2006-98458