Using RANS Mean Flow Fields in Numerical Aeroacoustics Simulations (CAA)

Abstract

One way to perform CAA simulations is to split the flow field in a steady mean flow and turbulent and acoustic fluctuations The small acoustic fluctuations can then be calculated from linearized Euler equations (LEE). The mean flow can be supplied by the solution of the Reynolds averaged Navier-Stokes (RANS) equations. Since different numerical requirements exist for the numerical grids of RANS and LEE simulations, an interpolation procedure between RANS and LEE grids is necessary. The following paper presents an interpolation procedure between different structured multi-block grids and its application to RANS/CAA simulations of a generic wing section.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2003
Accession Number
ADP014108

Entities

People

  • H. A. Grogger
  • J. W. Delfs
  • M. Lummer

Tags

DTIC Thesaurus Topics

  • Acoustic Propagation
  • Acoustics
  • Aircrafts
  • Airframes
  • Boundary Layer
  • Computational Fluid Dynamics
  • Differential Equations
  • Equations
  • Euler Equations
  • Filters
  • Flow Fields
  • High Lift Devices
  • Large Eddy Simulation
  • Layers
  • Simulations
  • Split Flaps
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computational Fluid Dynamics (CFD)