Large Eddy Simulation of Turbulent Flow over an Airfoil Using Unstructured Grids

Abstract

Many flows of aeronautical interest have regions where turbulence has a significant effect. For many of these flows, Reynolds-averaged Navier-Stokes simulation (RANSS) techniques do not give an acceptable description of the flow. In these cases a more detailed simulation of the turbulence is required. One such detailed simulation technique, large-eddy simulation (LES) has matured to the point of application to complex flows. Historically, LES have been carried out with structured grids which suffer from two major difficulties: the extension to higher Reynolds numbers leads to an impractical number of grid points, and most real world flows are rather difficult to represent geometrically with structured grids. Unstructured-grid methods offer a release from both of these constraints. Within this sponsored research significant progress has been made towards the application of the above approach to flows of aeronautical interest.

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Document Details

Document Type
Technical Report
Publication Date
May 31, 1999
Accession Number
ADA364164

Entities

People

  • Kenneth E. Jansen

Organizations

  • Rensselaer Polytechnic Institute

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Engineering
  • Equations
  • Flow
  • Fluid Flow
  • Large Eddy Simulation
  • Layers
  • Mechanics
  • Navier Stokes Equations
  • Parallel Computing
  • Parallel Processing
  • Simulations
  • Statistics
  • Turbulence
  • Turbulent Flow

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Mechanics and Fluid Dynamics.
  • Systems Analysis and Design