Simulation of Instabilities and Sound Radiation in a Jet

Alvin Bayliss; Lucio Maestrello

doi:10.2514/3.51013

Simulation of Instabilities and Sound Radiation in a Jet

Alvin Bayliss, Lucio Maestrello

Engineering Sciences and Applied Mathematics

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

16 Scopus citations

Abstract

The inflow and near field of a jet that is excited by an axial mass source located in the potential core are simulated numerically. The simulation takes into account the spreading of the jet. Comparison is made with experimental results for both excited and unexcited jets. It is shown that many of the features observed experimentally are due to the instability of the mean profile (i.e., the large-scale structures) and not due to the turbulence. The instability is shown to generate low-frequency sound. The terms identified by Ribner as the shear noise terms are shown to be responsible for this sound generation.

Original language	English (US)
Pages (from-to)	835-841
Number of pages	7
Journal	AIAA journal
Volume	19
Issue number	7
DOIs	https://doi.org/10.2514/3.51013
State	Published - Jul 1981

Funding

This work was partially supported under NASA Contracts No. NAS1-14472 and NAS1-15810 while the first author was in residence at the Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, Hampton, Va., 23665. Additional support for the first author was provided by Air Force Contract No. AFOSR-76-2881.

ASJC Scopus subject areas

Aerospace Engineering

Access to Document

10.2514/3.51013

Cite this

@article{5c3d703cf56a429585d11a7020c89173,

title = "Simulation of Instabilities and Sound Radiation in a Jet",

abstract = "The inflow and near field of a jet that is excited by an axial mass source located in the potential core are simulated numerically. The simulation takes into account the spreading of the jet. Comparison is made with experimental results for both excited and unexcited jets. It is shown that many of the features observed experimentally are due to the instability of the mean profile (i.e., the large-scale structures) and not due to the turbulence. The instability is shown to generate low-frequency sound. The terms identified by Ribner as the shear noise terms are shown to be responsible for this sound generation.",

author = "Alvin Bayliss and Lucio Maestrello",

note = "Funding Information: This work was partially supported under NASA Contracts No. NAS1-14472 and NAS1-15810 while the first author was in residence at the Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, Hampton, Va., 23665. Additional support for the first author was provided by Air Force Contract No. AFOSR-76-2881.",

year = "1981",

month = jul,

doi = "10.2514/3.51013",

language = "English (US)",

volume = "19",

pages = "835--841",

journal = "AIAA journal",

issn = "0001-1452",

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

number = "7",

}

TY - JOUR

T1 - Simulation of Instabilities and Sound Radiation in a Jet

AU - Bayliss, Alvin

AU - Maestrello, Lucio

N1 - Funding Information: This work was partially supported under NASA Contracts No. NAS1-14472 and NAS1-15810 while the first author was in residence at the Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, Hampton, Va., 23665. Additional support for the first author was provided by Air Force Contract No. AFOSR-76-2881.

PY - 1981/7

Y1 - 1981/7

N2 - The inflow and near field of a jet that is excited by an axial mass source located in the potential core are simulated numerically. The simulation takes into account the spreading of the jet. Comparison is made with experimental results for both excited and unexcited jets. It is shown that many of the features observed experimentally are due to the instability of the mean profile (i.e., the large-scale structures) and not due to the turbulence. The instability is shown to generate low-frequency sound. The terms identified by Ribner as the shear noise terms are shown to be responsible for this sound generation.

AB - The inflow and near field of a jet that is excited by an axial mass source located in the potential core are simulated numerically. The simulation takes into account the spreading of the jet. Comparison is made with experimental results for both excited and unexcited jets. It is shown that many of the features observed experimentally are due to the instability of the mean profile (i.e., the large-scale structures) and not due to the turbulence. The instability is shown to generate low-frequency sound. The terms identified by Ribner as the shear noise terms are shown to be responsible for this sound generation.

UR - http://www.scopus.com/inward/record.url?scp=0019592089&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0019592089&partnerID=8YFLogxK

U2 - 10.2514/3.51013

DO - 10.2514/3.51013

M3 - Article

AN - SCOPUS:0019592089

SN - 0001-1452

VL - 19

SP - 835

EP - 841

JO - AIAA journal

JF - AIAA journal

IS - 7

ER -

Simulation of Instabilities and Sound Radiation in a Jet

Abstract

Funding

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this