Decomposition of radiating and non-radiating linear fluctuating components in compressible flows

Paul Stegeman, Andrew Ooi, Julio Soria

Research output: Chapter in Book/Report/Conference proceedingChapter (Book)Researchpeer-review

Abstract

Decomposition of radiating and non-radiating fluctuating components are important to the study of sound generation and acoustic feedback mechanisms present in a variety of free shear flows. Prior work primarily focused on the development of a decomposition operator for subsonic flows based on the acoustic dispersion relationship which is invariant to the position in time and space, such as found in Goldstein and Sinayoko et al. This paper presents the development of an operator that approximately decomposes linear fluctuating flow variables into their radiating and non-radiating components locally in time and space using the wavelet and curvelet transforms as a basis. The operator has been applied to a large-eddy simulation of a highly compressible under-expanded impinging jet to study its radiating and non-radiating fields.
Original languageEnglish
Title of host publicationAdvances in Computation, Modeling and Control of Transitional and Turbulent Flows
EditorsTapan K. Sengupta, Sanjiva K. Lele, Katepalli R. Sreenivasan, Peter A. Davidson
Place of PublicationSingapore
PublisherWorld Scientific Publishing
Pages388-396
Number of pages9
ISBN (Electronic)9789814635172
ISBN (Print)9789814635158
DOIs
Publication statusPublished - 2016
EventIUTAM Symposium on Advances in Computation, Modeling and Control of Transitional and Turbulent Flows - Goa, India
Duration: 15 Dec 201418 Dec 2014

Conference

ConferenceIUTAM Symposium on Advances in Computation, Modeling and Control of Transitional and Turbulent Flows
CountryIndia
CityGoa
Period15/12/1418/12/14

Keywords

  • Compressible jet flows
  • Acoustic decomposition
  • Large-eddy simulation
  • Curvelets

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