Direct Numerical Simulation of Aeolian Tones

Abstract

Direct numerical simulation results of aeolian tones generated by a two-dimensional obstacle (circular cylinder, square cylinder, NACA0012 airfoil) in a uniform flow are presented and the generation and propagation mechanisms of the sound are discussed. The unsteady compressible Navier-Stokes equations are solved by a highly-accurate finite difference scheme over the entire region from near to far fields. The direct numerical simulation results are also compared with the results obtained by Curle's acoustic analogy.

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Document Details

Document Type
Technical Report
Publication Date
Apr 15, 2005
Accession Number
ADA447185

Entities

People

  • Osamu Inoue

Organizations

  • Tohoku University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • Computational Fluid Dynamics
  • Doppler Effect
  • Equations
  • Far Field
  • Flow
  • Fluid Dynamics
  • Fluid Flow
  • Mach Number
  • Navier Stokes Equations
  • Physics Laboratories
  • Reynolds Number
  • Simulations
  • Sound Pressure
  • Two Dimensional
  • Vortex Shedding

Readers

  • Acoustics.
  • Computational Fluid Dynamics (CFD)
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering