Calculation’s of interaction of acoustic waves with a two-dimensional free shear layer

S. Koshigoe; V. Yang; F. E.C. Culick

Calculation’s of interaction of acoustic waves with a two-dimensional free shear layer

S. Koshigoe, V. Yang, F. E.C. Culick

College of Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The acoustic/vortical interaction in a two-dimensional free shear layer has been studied. The flowfield is represented by division into two parts: the vortical and the compressible flows. Each field is treated separately and linked with the other through the Bernoulli enthalpy. Acoustic waves are identified as unsteady compressible motions free of vorticity. Calculations have been carried out for the flowfields with and without externally imposed disturbances. Preliminary results reported here indicate that the motion of large coherent flow structures contributes significantly to sound generation. In particular, the formation of large structure and subsequent pairing appear globally as a quadrupole source.

Original language	English
Publication status	Published - 1985
Event	AlAA 23rd Aerospace Sciences Meeting, 1985 - Reno, United States Duration: 1985 Jan 14 → 1985 Jan 17

Conference

Conference	AlAA 23rd Aerospace Sciences Meeting, 1985
Country/Territory	United States
City	Reno
Period	85-01-14 → 85-01-17

All Science Journal Classification (ASJC) codes

Aerospace Engineering

Cite this

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title = "Calculation{\textquoteright}s of interaction of acoustic waves with a two-dimensional free shear layer",

abstract = "The acoustic/vortical interaction in a two-dimensional free shear layer has been studied. The flowfield is represented by division into two parts: the vortical and the compressible flows. Each field is treated separately and linked with the other through the Bernoulli enthalpy. Acoustic waves are identified as unsteady compressible motions free of vorticity. Calculations have been carried out for the flowfields with and without externally imposed disturbances. Preliminary results reported here indicate that the motion of large coherent flow structures contributes significantly to sound generation. In particular, the formation of large structure and subsequent pairing appear globally as a quadrupole source.",

author = "S. Koshigoe and V. Yang and Culick, {F. E.C.}",

note = "Publisher Copyright: {\textcopyright} American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.; AlAA 23rd Aerospace Sciences Meeting, 1985 ; Conference date: 14-01-1985 Through 17-01-1985",

year = "1985",

language = "English",

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TY - CONF

T1 - Calculation’s of interaction of acoustic waves with a two-dimensional free shear layer

AU - Koshigoe, S.

AU - Yang, V.

AU - Culick, F. E.C.

PY - 1985

Y1 - 1985

N2 - The acoustic/vortical interaction in a two-dimensional free shear layer has been studied. The flowfield is represented by division into two parts: the vortical and the compressible flows. Each field is treated separately and linked with the other through the Bernoulli enthalpy. Acoustic waves are identified as unsteady compressible motions free of vorticity. Calculations have been carried out for the flowfields with and without externally imposed disturbances. Preliminary results reported here indicate that the motion of large coherent flow structures contributes significantly to sound generation. In particular, the formation of large structure and subsequent pairing appear globally as a quadrupole source.

AB - The acoustic/vortical interaction in a two-dimensional free shear layer has been studied. The flowfield is represented by division into two parts: the vortical and the compressible flows. Each field is treated separately and linked with the other through the Bernoulli enthalpy. Acoustic waves are identified as unsteady compressible motions free of vorticity. Calculations have been carried out for the flowfields with and without externally imposed disturbances. Preliminary results reported here indicate that the motion of large coherent flow structures contributes significantly to sound generation. In particular, the formation of large structure and subsequent pairing appear globally as a quadrupole source.

UR - http://www.scopus.com/inward/record.url?scp=84999025279&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84999025279&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84999025279

T2 - AlAA 23rd Aerospace Sciences Meeting, 1985

Y2 - 14 January 1985 through 17 January 1985

ER -

Calculation’s of interaction of acoustic waves with a two-dimensional free shear layer

Abstract

Conference

All Science Journal Classification (ASJC) codes

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