A Parametric Study of Jet/Vortex Interactions in the AMRL Water Tunnel

Abstract

In this report, details are given of a parametric study undertaken in the AMRL flow-visualisation water tunnel to determine how vortices are affected when they interact with different types of jet flows. The effects on vortices of jets having different shapes, velocities, locations and pitch angles were investigated. The flow was visualized using dye and vortex behaviour was examined for 42 different jets. It was found that jet shape, jet velocity and jet location all had a significant effect on vortex behaviour, whereas jet pitch angle generally had a minimal effect. Possible physical explanations for vortex behaviour have been proposed. The parametric study is the first stage of a longer investigation aimed at determining the best jet configurations to use to control vortical flow over modern high-performance aircraft to improve aircraft control at extreme flight attitudes. The findings of the initial parametric study will be used in any ongoing work on the investigation.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2001
Accession Number
ADA407908

Entities

People

  • Lincoln P. Erm

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircrafts
  • Boundaries
  • Boundary Layer
  • Coordinate Systems
  • Engineering
  • Flow Visualization
  • Fluid Dynamics
  • Fluid Flow
  • Fluid Mechanics
  • Free Stream
  • High Pressure
  • Jet Flow
  • Layers
  • Lifting Surfaces
  • Mechanics
  • Reynolds Number
  • Turbines

Readers

  • Aviation Science / Aeronautics.
  • Computational Modeling and Simulation
  • Fluid Mechanics and Fluid Dynamics.