Detached-Eddy Simulations of Full Aircraft Experiencing Massively Separated Flows

Abstract

A high resolution turbulence treatment for massively separated flows is presented for fighters at flight Reynolds numbers. The method is Detached Eddy Simulation (DES), a hybrid Reynolds averaged Navier-Stokes - Large Eddy Simulation technique that can accurately capture attached boundary layers at flight Reynolds numbers, while still reproducing the unsteady loads associated with massively separated flow. Three examples of US Department of Defense aircraft, the F-15E, F/A-18C and F/A-18E, are used as test cases to show the utility of Detached Eddy Simulation in capturing nonlinear phenomena such as wing buffet, vortex breakdown, and abrupt wing stall. Comparison with either flight test or experiment is also accomplished for these cases.

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Document Details

Document Type
Technical Report
Publication Date
Apr 14, 2005
Accession Number
ADA447205

Entities

People

  • J. R. Forsythe
  • K. D. Squires
  • R. M. Cummings
  • S. A. Morton

Organizations

  • United States Air Force Academy

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aerodynamic Characteristics
  • Aeroelasticity
  • Air Force
  • Aircrafts
  • Boundary Layer
  • Computational Fluid Dynamics
  • Differential Equations
  • Equations
  • Fighter Aircraft
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Large Eddy Simulation
  • Mechanical Properties
  • Reynolds Number
  • Simulations
  • Wind Tunnels

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.