Numerical Prediction of the Unsteady Flow and Radiated Noise from a 3D Lifting Airfoil

Abstract

The numerical prediction of the aerodynamic noise radiated by an isolated airfoil is performed using a Computational AeroAcoustics (CAA) method. This hybrid method combines (i) a simulation of the near field unsteady flow and (ii) an acoustic method to estimate the noise radiated in the far field. This process is applied to a symmetrical NACA0012 airfoil with a constant section and a blunted trailing edge (TE), at a Mach number of 0.205 and an angle-of-attack of 5%. The Reynolds number based on the airfoil chord is 2%86 millions. The computational domain has a spanwise extent representing 3.3 % of the chord.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2003
Accession Number
ADP014110

Entities

People

  • C. Delahay
  • E. Manoha
  • P. Guillen
  • S. B. Khelil
  • S. Redonnet

Organizations

  • Office National d'Études et de Recherches Aérospatiales

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Acoustics
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Control Surfaces
  • Euler Equations
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • High Lift Devices
  • Large Eddy Simulation
  • Mechanical Properties
  • Vortex Shedding
  • Wing Flaps

Fields of Study

  • Physics

Readers

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