Supersonic jet impingement on a cylindrical surface

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

Supersonic jet impingement on a cylindrical surface

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

Aerospace Engineering and Mechanics

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

11 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 0.42-0.54U_j is obtained and the velocity used to estimate the sound source location, with good agreement with previous research.

Original language	English (US)
Title of host publication	22nd AIAA/CEAS Aeroacoustics Conference
Publisher	American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)	9781624103865
State	Published - Jan 1 2016
Event	22nd AIAA/CEAS Aeroacoustics Conference, 2016 - Lyon, France Duration: May 30 2016 → Jun 1 2016

Other

Other	22nd AIAA/CEAS Aeroacoustics Conference, 2016
Country/Territory	France
City	Lyon
Period	5/30/16 → 6/1/16

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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

PY - 2016/1/1

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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 contribution

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Y2 - 30 May 2016 through 1 June 2016

ER -

Supersonic jet impingement on a cylindrical surface

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