Viscous Flowfields Induced by Three-Dimensional Lift Jets in Ground Effect.

Abstract

The turbulent flowfields associated with single and multiple jets impinging on a ground plane are relevant to the aerodynamics of VTOL aircraft in ground effect. These flowfields are computed using the Reynolds equations and a two-equation turbulence model to describe an isolated jet and two interacting jets with fountain formation. Coordinate transformations are employed to apply the boundary conditions for the governing equations in the far field, and a third-order-accurate upwind-difference scheme is used to discretize the resulting system. Flowfield properties calculated for these impinging-jet configurations are presented and compared with experimental data.

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Document Details

Document Type
Technical Report
Publication Date
Jan 30, 1982
Accession Number
ADA121026

Entities

People

  • W. W. Bower

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Boltzmann Equation
  • Boundary Layer
  • Channel Flow
  • Computational Fluid Dynamics
  • Computational Science
  • Differential Equations
  • Far Field
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Mechanics
  • Military Research
  • Navier Stokes Equations
  • Partial Differential Equations
  • Physics Laboratories
  • Pressure Distribution
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Mechanics and Fluid Dynamics.