Preliminary Research on Post-Stall Aerodynamics.

Abstract

Fundamental results for two and three dimensional unsteady flows are derived. A model for vortex shedding at salient edges is advanced. A two dimensional Euler solver that implements this vortex shedding mechanism is described. Results of applying this model to impulsively started flat plates with fixed and with oscillating chord at angle of attack are presented. Implications for manipulation of the vortex wake in a post stall maneuver are discussed. Extension of the numerical methodology to three dimensions is also discussed. Keywords: Post-stall maneuverability, Separated flow, Unsteady aerodynamics, Numerical methods and procedures.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1985
Accession Number
ADA166279

Entities

People

  • R. B. Myers
  • S. C. Crow

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aerodynamics
  • Air Force
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Flow
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Mechanical Properties
  • Notation
  • Physics
  • Stratified Fluids
  • Turbulent Mixing
  • Viscous Flow
  • Vortex Shedding

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Dynamics.