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

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

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摘要

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.

原文English
出版狀態Published - 1985
事件AlAA 23rd Aerospace Sciences Meeting, 1985 - Reno, United States
持續時間: 1985 一月 141985 一月 17

Conference

ConferenceAlAA 23rd Aerospace Sciences Meeting, 1985
國家United States
城市Reno
期間85-01-1485-01-17

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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