Supersonic jet impingement on a cylindrical surface

Joel L. Weightman, Omid Amili, Damon Honnery, Julio Soria, Daniel Edgington-Mitchell

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

8 Scopus citations

Abstract

A supersonic jet at an NPR of 3.6 impinging upon a cylindrical section at z/D = 3.5 is investigated using particle image velocimetry. POD illustrates that a stationary flapping mode dominates the flow, containing ≈ 40% of the specific kinetic energy. Instantaneous measurements show acoustic waves propagating in the entrainment field. Based on the separation of these waves and an estimated wave speed of 332.5m/s, a frequency estimation of 8240Hz is obtained, which compares well to the microphone measurement of 8301Hz. A phase average is used to determine the convective velocity of the coherent structures. A range of 0.42-0.54Uj is obtained and the velocity used to estimate the sound source location, with good agreement with previous research.

Original languageEnglish (US)
Title of host publication22nd AIAA/CEAS Aeroacoustics Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624103865
StatePublished - Jan 1 2016
Event22nd AIAA/CEAS Aeroacoustics Conference, 2016 - Lyon, France
Duration: May 30 2016Jun 1 2016

Other

Other22nd AIAA/CEAS Aeroacoustics Conference, 2016
CountryFrance
CityLyon
Period5/30/166/1/16

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