## Acoustic radiation and wave propagation: presented at 1994 International Mechanical Engineering Congress and Exposition, Chicago, Illinois, November 6-11, 1994 |

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### Contents

How Do Vortices Generate Sound? | 1 |

Influence of Structural Wave Dispersion on Scattering Patterns With Application | 9 |

Locally Conservative Difference Equations for Linear Acoustics | 19 |

Copyright | |

13 other sections not shown

### Common terms and phrases

acoustic analogy acoustic field acoustic pressure Acoustic Radiation Acoustical Society Aeroacoustics aerodynamic AIAA amplitude angle approximation ASME asymptotic axial azimuthal calculated coefficients Computational Computational Aeroacoustics cylinder cylindrical shell derived dilating sphere dipole direction dispersion relation displacement domain effects elastic equation evaluated excitation expansion far-field Farassat Felsen Figure finite flexible structure flexural wave flow blockage factor fluid frequency Green's function Hankel functions harmonic increase infinite plate jet flow jet Mach number jet noise reduction jet thrust loss Kirchhoff formulation Kirchhoffs method linear Lyrintzis mean flow mode motion near-field nonlinear normal obtained phase velocity Pierce plane wave PNLT dB polar angular problem quadrupole radiated acoustic power ratio ribs rotor screech tones Society of America solution sound pressure level sound radiation subsonic supersonic supersonic jet noise surface pressure surface wave terminal velocity tion Transonic vector vortex ring vorticity Wave Propagation wavenumber