Unsteady Navier-Stokes Calculations in an Accelerated Reference Frame.

Abstract

The purpose of this project was to develop a numerical method capable of calculating the laminar flow about a two dimensional accelerating body using the incompressible Navier-Stokes equations. This problem arises in the calculation of the dynamic stall of an airfoil and in the calculation of pitching and heaving stability derivatives for an isolated airfoil. It is also a first step toward solving the three dimensional flow about a complete wing undergoing arbitrary motion at high angles of attack, including departure, spin, and post-stall maneuvers. Numerical calculations to date have not been satisfactory. Test cases presented are Stoke's first problem, a circular cylinder translating at a Reynold's number of 20, and a rotating stationary circular cylinder. Keywords include: Aerodynamics, Airfoils, Difference equations, Navier Stokes equations.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1984
Accession Number
ADA151751

Entities

People

  • T. E. Speer

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Difference Equations
  • Differential Equations
  • Equations
  • Fluid Dynamics
  • Fluid Flow
  • High Angles
  • Incompressible Flow
  • Laminar Flow
  • Navier Stokes Equations
  • Numerical Analysis
  • Three Dimensional
  • Turbulent Mixing
  • Two Dimensional
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.