Impingement tones and associated shock instabilities in supersonic plug nozzle flows

Andrew T. Powis; Ryan J. Brunet; Joshua P. Lynch; Damon R. Honnery; Julio Soria; Daniel Edgington-Mitchell

doi:10.2514/1.J054429

Impingement tones and associated shock instabilities in supersonic plug nozzle flows

Andrew T. Powis
, Ryan J. Brunet
, Joshua P. Lynch
, Damon R. Honnery
, Julio Soria
, Daniel Edgington-Mitchell

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

An investigation into a supersonic impinging jet emitted from a truncated plug nozzle is presented for a nozzle pressure ratio of 3.4. High-resolution schlieren and acoustic measurements verify that the jet behavior close to the nozzle is significantly different from round jets. Impingement tones are not observed for plate distances less than 3.2 nozzlediametersfromthethroat.Sufficientlyfardownstreamfromthenozzle,thejetshockstructureissimilartothat of a round jet. Ultrahigh-speed schlieren is used to track the motion of the standoff shock located above the impingement plate. The shock-oscillation frequency matches the impingement-tone frequency within statistical uncertainty. The average shock standoff distance and oscillation amplitude are related to the relative position of the impingementplatewithrespecttotheshockstructureintheequivalentfreejet.Shocksplittingisdirectlyobservedfor certain plate distances.

Original language	English (US)
Pages (from-to)	2843-2851
Number of pages	9
Journal	AIAA journal
Volume	54
Issue number	9
DOIs	https://doi.org/10.2514/1.J054429
State	Published - 2016
Externally published	Yes

All Science Journal Classification (ASJC) codes

Aerospace Engineering

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10.2514/1.J054429

Cite this

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title = "Impingement tones and associated shock instabilities in supersonic plug nozzle flows",

abstract = "An investigation into a supersonic impinging jet emitted from a truncated plug nozzle is presented for a nozzle pressure ratio of 3.4. High-resolution schlieren and acoustic measurements verify that the jet behavior close to the nozzle is significantly different from round jets. Impingement tones are not observed for plate distances less than 3.2 nozzlediametersfromthethroat.Sufficientlyfardownstreamfromthenozzle,thejetshockstructureissimilartothat of a round jet. Ultrahigh-speed schlieren is used to track the motion of the standoff shock located above the impingement plate. The shock-oscillation frequency matches the impingement-tone frequency within statistical uncertainty. The average shock standoff distance and oscillation amplitude are related to the relative position of the impingementplatewithrespecttotheshockstructureintheequivalentfreejet.Shocksplittingisdirectlyobservedfor certain plate distances.",

author = "Powis, \{Andrew T.\} and Brunet, \{Ryan J.\} and Lynch, \{Joshua P.\} and Honnery, \{Damon R.\} and Julio Soria and Daniel Edgington-Mitchell",

year = "2016",

doi = "10.2514/1.J054429",

language = "English (US)",

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publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",

number = "9",

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TY - JOUR

T1 - Impingement tones and associated shock instabilities in supersonic plug nozzle flows

AU - Powis, Andrew T.

AU - Brunet, Ryan J.

AU - Lynch, Joshua P.

AU - Honnery, Damon R.

AU - Soria, Julio

AU - Edgington-Mitchell, Daniel

PY - 2016

Y1 - 2016

N2 - An investigation into a supersonic impinging jet emitted from a truncated plug nozzle is presented for a nozzle pressure ratio of 3.4. High-resolution schlieren and acoustic measurements verify that the jet behavior close to the nozzle is significantly different from round jets. Impingement tones are not observed for plate distances less than 3.2 nozzlediametersfromthethroat.Sufficientlyfardownstreamfromthenozzle,thejetshockstructureissimilartothat of a round jet. Ultrahigh-speed schlieren is used to track the motion of the standoff shock located above the impingement plate. The shock-oscillation frequency matches the impingement-tone frequency within statistical uncertainty. The average shock standoff distance and oscillation amplitude are related to the relative position of the impingementplatewithrespecttotheshockstructureintheequivalentfreejet.Shocksplittingisdirectlyobservedfor certain plate distances.

AB - An investigation into a supersonic impinging jet emitted from a truncated plug nozzle is presented for a nozzle pressure ratio of 3.4. High-resolution schlieren and acoustic measurements verify that the jet behavior close to the nozzle is significantly different from round jets. Impingement tones are not observed for plate distances less than 3.2 nozzlediametersfromthethroat.Sufficientlyfardownstreamfromthenozzle,thejetshockstructureissimilartothat of a round jet. Ultrahigh-speed schlieren is used to track the motion of the standoff shock located above the impingement plate. The shock-oscillation frequency matches the impingement-tone frequency within statistical uncertainty. The average shock standoff distance and oscillation amplitude are related to the relative position of the impingementplatewithrespecttotheshockstructureintheequivalentfreejet.Shocksplittingisdirectlyobservedfor certain plate distances.

UR - https://www.scopus.com/pages/publications/84982242191

UR - https://www.scopus.com/pages/publications/84982242191#tab=citedBy

U2 - 10.2514/1.J054429

DO - 10.2514/1.J054429

M3 - Article

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SN - 0001-1452

VL - 54

SP - 2843

EP - 2851

JO - AIAA journal

JF - AIAA journal

IS - 9

ER -

Impingement tones and associated shock instabilities in supersonic plug nozzle flows

Abstract

All Science Journal Classification (ASJC) codes

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