MODEL FOR BROADBAND JET NOISE AMPLIFICATION.

Philip John Morris

MODEL FOR BROADBAND JET NOISE AMPLIFICATION.

Philip John Morris

Aerospace Engineering

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

4 Scopus citations

Abstract

A model is proposed for the change in turbulent structure of a round jet in the presence of an acoustic excitation. The excitation is assumed to trigger instability waves of a known initial amplitude at the jet exit. As these waves propagate downstream they extract energy from the mean flow and transfer it to the random turbulence. This results in an increase in the levels of the turbulence and a resulting increase in the radiated broadband noise. No calculations are presented for the noise radiation; however, an examination is made of the effect of excitation level and frequency on the jet flow.

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

All Science Journal Classification (ASJC) codes

General Engineering

Cite this

@article{570aa4691f4e451f9d7626ea81ee27f3,

title = "MODEL FOR BROADBAND JET NOISE AMPLIFICATION.",

abstract = "A model is proposed for the change in turbulent structure of a round jet in the presence of an acoustic excitation. The excitation is assumed to trigger instability waves of a known initial amplitude at the jet exit. As these waves propagate downstream they extract energy from the mean flow and transfer it to the random turbulence. This results in an increase in the levels of the turbulence and a resulting increase in the radiated broadband noise. No calculations are presented for the noise radiation; however, an examination is made of the effect of excitation level and frequency on the jet flow.",

author = "Morris, \{Philip John\}",

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",

}

TY - JOUR

T1 - MODEL FOR BROADBAND JET NOISE AMPLIFICATION.

AU - Morris, Philip John

PY - 1980/1/1

Y1 - 1980/1/1

N2 - A model is proposed for the change in turbulent structure of a round jet in the presence of an acoustic excitation. The excitation is assumed to trigger instability waves of a known initial amplitude at the jet exit. As these waves propagate downstream they extract energy from the mean flow and transfer it to the random turbulence. This results in an increase in the levels of the turbulence and a resulting increase in the radiated broadband noise. No calculations are presented for the noise radiation; however, an examination is made of the effect of excitation level and frequency on the jet flow.

AB - A model is proposed for the change in turbulent structure of a round jet in the presence of an acoustic excitation. The excitation is assumed to trigger instability waves of a known initial amplitude at the jet exit. As these waves propagate downstream they extract energy from the mean flow and transfer it to the random turbulence. This results in an increase in the levels of the turbulence and a resulting increase in the radiated broadband noise. No calculations are presented for the noise radiation; however, an examination is made of the effect of excitation level and frequency on the jet flow.

UR - https://www.scopus.com/pages/publications/85069359928

UR - https://www.scopus.com/inward/citedby.url?scp=85069359928&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 -

MODEL FOR BROADBAND JET NOISE AMPLIFICATION.

Abstract

All Science Journal Classification (ASJC) codes

Other files and links

Fingerprint

Cite this