NEAR FIELD INTERACTION BETWEEN A SOUND PULSE AND A JET SHEAR LAYER.

Alvin Bayliss; L. Maestrello

NEAR FIELD INTERACTION BETWEEN A SOUND PULSE AND A JET SHEAR LAYER.

Alvin Bayliss^*, L. Maestrello

^*Corresponding author for this work

Engineering Sciences and Applied Mathematics

Research output: Contribution to journal › Conference article › peer-review

1 Scopus citations

Abstract

The in-flow and near field of a jet which is excited by an axial mass source located in the potential core is simulated numerically, taking due account of the jet spreading, and experimentally, using a shock-tube driver. Comparison is made for both excited and unexcited jets. It is shown that many of the features observed experimentally are consequences of the instability of the mean flow profile and not of turbulence. This instability is shown to be a significant amplifier of low frequency sound. The results demonstrate that a primary component of the observed shear noise in jets is generated by the mean profile instability.

Original language	English (US)
Journal	AIAA Paper
State	Published - Jan 1 1980
Event	AIAA Pap AIAA Aeroacoust Conf, 6th - Hartford, CT, USA Duration: Jun 4 1980 → Jun 6 1980

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "NEAR FIELD INTERACTION BETWEEN A SOUND PULSE AND A JET SHEAR LAYER.",

abstract = "The in-flow and near field of a jet which is excited by an axial mass source located in the potential core is simulated numerically, taking due account of the jet spreading, and experimentally, using a shock-tube driver. Comparison is made for both excited and unexcited jets. It is shown that many of the features observed experimentally are consequences of the instability of the mean flow profile and not of turbulence. This instability is shown to be a significant amplifier of low frequency sound. The results demonstrate that a primary component of the observed shear noise in jets is generated by the mean profile instability.",

author = "Alvin Bayliss and L. Maestrello",

year = "1980",

month = jan,

day = "1",

language = "English (US)",

journal = "AIAA Paper",

issn = "0146-3705",

note = "AIAA Pap AIAA Aeroacoust Conf, 6th ; Conference date: 04-06-1980 Through 06-06-1980",

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T1 - NEAR FIELD INTERACTION BETWEEN A SOUND PULSE AND A JET SHEAR LAYER.

AU - Bayliss, Alvin

AU - Maestrello, L.

PY - 1980/1/1

Y1 - 1980/1/1

N2 - The in-flow and near field of a jet which is excited by an axial mass source located in the potential core is simulated numerically, taking due account of the jet spreading, and experimentally, using a shock-tube driver. Comparison is made for both excited and unexcited jets. It is shown that many of the features observed experimentally are consequences of the instability of the mean flow profile and not of turbulence. This instability is shown to be a significant amplifier of low frequency sound. The results demonstrate that a primary component of the observed shear noise in jets is generated by the mean profile instability.

AB - The in-flow and near field of a jet which is excited by an axial mass source located in the potential core is simulated numerically, taking due account of the jet spreading, and experimentally, using a shock-tube driver. Comparison is made for both excited and unexcited jets. It is shown that many of the features observed experimentally are consequences of the instability of the mean flow profile and not of turbulence. This instability is shown to be a significant amplifier of low frequency sound. The results demonstrate that a primary component of the observed shear noise in jets is generated by the mean profile instability.

UR - http://www.scopus.com/inward/record.url?scp=85040261036&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85040261036&partnerID=8YFLogxK

M3 - Conference article

SN - 0146-3705

JO - AIAA Paper

JF - AIAA Paper

T2 - AIAA Pap AIAA Aeroacoust Conf, 6th

Y2 - 4 June 1980 through 6 June 1980

ER -

NEAR FIELD INTERACTION BETWEEN A SOUND PULSE AND A JET SHEAR LAYER.

Abstract

ASJC Scopus subject areas

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