A Caltech Library Service

Calculations of Interaction of Acoustic Waves with a Two- Dimensional Free Shear Layer

Koshigoe, S. and Culick, F. E. C. (1985) Calculations of Interaction of Acoustic Waves with a Two- Dimensional Free Shear Layer. AIAA Papers, AIAA 85-0043. American Institute of Aeronautics and Astronautics .

[img] PDF - Published Version
See Usage Policy.


Use this Persistent URL to link to this item:


The acoustic/vortical interaction in a twodimensional 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.

Item Type:Report or Paper (Report)
Additional Information:© 1985, AIAA. This paper is declared a work of the U.S. Government and therefore is in the public domain. This work contains some results obtained from the research program supported partly by the Naval Weapons Center, partly by the California Institute of Technology, and partly by NAVAIR, Contract No. N0014-84-K-0434.
Group:Guggenheim Jet Propulsion Center, GALCIT
Funding AgencyGrant Number
Naval Weapons CenterUNSPECIFIED
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Guggenheim Jet Propulsion CenterUNSPECIFIED
Series Name:AIAA Papers
Issue or Number:AIAA 85-0043
Record Number:CaltechAUTHORS:20101208-072047856
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:21224
Deposited By: Ruth Sustaita
Deposited On:14 Dec 2010 22:53
Last Modified:03 Oct 2019 02:21

Repository Staff Only: item control page