Dynamics of round jet impingement

Vincent Jaunet; Matteo Mancinelli; Peter Jordan; Aaron Towne; Daniel M. Edgington-Mitchell; Guillaume Lehnasch; S. Girard

doi:10.2514/6.2019-2769

Dynamics of round jet impingement

Vincent Jaunet, Matteo Mancinelli, Peter Jordan, Aaron Towne, Daniel M. Edgington-Mitchell, Guillaume Lehnasch, S. Girard

Mechanical & Aerospace Engineering

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

Abstract

The impingement of a round jet issued from a convergent nozzle is known to produce intense tonal noise. These tones are generated by a feedback process involving a Kelvin-Helmholtz instability wave and an upstream-travelling guided jet mode. The frequency structure of these tones is experimentally explored by varying the jet Mach number from 0.7 to 1.5 and we observe evidence that the upstream-travelling guided modes of the jet are active in the feedback process. Tone frequency predictions obtained using the intrinsic jet modes are compared to the standard model involving free-stream acoustic waves: the upstream-travelling guided waves model provides a convincing agreement with the experimental data.this make.

Original language	English
Title of host publication	25th AIAA/CEAS Aeroacoustics Conference, 2019
Publisher	American Institute of Aeronautics and Astronautics
Number of pages	11
ISBN (Print)	9781624105883
DOIs	https://doi.org/10.2514/6.2019-2769
Publication status	Published - 2019
Event	AIAA/CEAS Aeroacoustics Conference 2019 - Delft, Netherlands Duration: 20 May 2019 → 23 May 2019 Conference number: 25th https://arc.aiaa.org/doi/book/10.2514/MAERO19

Conference

Conference	AIAA/CEAS Aeroacoustics Conference 2019
Country	Netherlands
City	Delft
Period	20/05/19 → 23/05/19
Internet address	https://arc.aiaa.org/doi/book/10.2514/MAERO19

Access to Document

10.2514/6.2019-2769

Link to publication in Scopus

Cite this

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title = "Dynamics of round jet impingement",

abstract = "The impingement of a round jet issued from a convergent nozzle is known to produce intense tonal noise. These tones are generated by a feedback process involving a Kelvin-Helmholtz instability wave and an upstream-travelling guided jet mode. The frequency structure of these tones is experimentally explored by varying the jet Mach number from 0.7 to 1.5 and we observe evidence that the upstream-travelling guided modes of the jet are active in the feedback process. Tone frequency predictions obtained using the intrinsic jet modes are compared to the standard model involving free-stream acoustic waves: the upstream-travelling guided waves model provides a convincing agreement with the experimental data.this make.",

author = "Vincent Jaunet and Matteo Mancinelli and Peter Jordan and Aaron Towne and Edgington-Mitchell, {Daniel M.} and Guillaume Lehnasch and S. Girard",

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AU - Jaunet, Vincent

AU - Mancinelli, Matteo

AU - Jordan, Peter

AU - Towne, Aaron

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AU - Lehnasch, Guillaume

AU - Girard, S.

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AB - The impingement of a round jet issued from a convergent nozzle is known to produce intense tonal noise. These tones are generated by a feedback process involving a Kelvin-Helmholtz instability wave and an upstream-travelling guided jet mode. The frequency structure of these tones is experimentally explored by varying the jet Mach number from 0.7 to 1.5 and we observe evidence that the upstream-travelling guided modes of the jet are active in the feedback process. Tone frequency predictions obtained using the intrinsic jet modes are compared to the standard model involving free-stream acoustic waves: the upstream-travelling guided waves model provides a convincing agreement with the experimental data.this make.

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