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

Abstract

An important consideration for VTOL aircraft design is the aerodynamic interaction between the lift jets and the ground plane. In an effort to predict this phenomenon for two jets, a finite-difference solution of the three-dimensional conservation equations of fluid mechanics, in combination with a turbulence model, has been developed for the case of incompressible flow. The solution technique is applied to the normal and oblique impingement of equal- and unequal-strength jets in ground effect with fountain formation. Fluid properties that characterize the flowfields are presented, and computed results are compared with data for the ground plane pressure distribution, fountain flow direction, wall-jet properties, and stagnation line shape.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1980
Accession Number
ADA117427

Entities

People

  • G. R. Peters
  • W. W. Bower

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Artificial Intelligence
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Difference Equations
  • Differential Equations
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Mechanical Properties
  • Navier Stokes Equations
  • Partial Differential Equations
  • Poisson Equation
  • Pressure Distribution
  • Reynolds Number
  • Turbulent Mixing
  • Viscous Flow

Fields of Study

  • Physics

Readers

  • Fluid Mechanics and Fluid Dynamics.