Supersonic jet impingement on a cylindrical surface

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

doi:10.2514/6.2016-2800

Supersonic jet impingement on a cylindrical surface

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

Mechanical & Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research

11 Citations (Scopus)

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 0.42-0.54U_j is obtained and the velocity used to estimate the sound source location, with good agreement with previous research.

Original language	English
Title of host publication	22nd AIAA/CEAS Aeroacoustics Conference
Subtitle of host publication	Lyon, France, 30 May - 1 June, 2016
Publisher	American Institute of Aeronautics and Astronautics
Number of pages	13
ISBN (Electronic)	9781624103865
DOIs	https://doi.org/10.2514/6.2016-2800
Publication status	Published - 2016
Event	AIAA/CEAS Aeroacoustics Conference 2016 - Lyon, France Duration: 30 May 2016 → 1 Jun 2016 Conference number: 22nd https://arc.aiaa.org/doi/book/10.2514/MAERO16

Conference

Conference	AIAA/CEAS Aeroacoustics Conference 2016
Country/Territory	France
City	Lyon
Period	30/05/16 → 1/06/16
Internet address	https://arc.aiaa.org/doi/book/10.2514/MAERO16

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10.2514/6.2016-2800

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title = "Supersonic jet impingement on a cylindrical surface",

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.",

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T1 - Supersonic jet impingement on a cylindrical surface

AU - Weightman, Joel L.

AU - Amili, Omid

AU - Honnery, Damon

AU - Soria, Julio

AU - Edgington-Mitchell, Daniel

N1 - Conference code: 22nd

PY - 2016

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N2 - 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.

AB - 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.

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M3 - Conference Paper

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T2 - AIAA/CEAS Aeroacoustics Conference 2016

Y2 - 30 May 2016 through 1 June 2016

ER -

Supersonic jet impingement on a cylindrical surface

Abstract

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