PRESSURE MEASUREMENT ON FLAPPED HYDROFOILS IN CAVITY FLOWS AND WAKE FLOWS

Abstract

The purpose of the present experiments is to obtain a detailed information about the flow field, such as the pressure distribution, at the surface of a flapped hydrofoil in full cavity or wake flows. The model and the experimental procedure are described. The experimental results obtained have been used to compare with the theoretical predictions, to investigate the tunnel wall effect and to estimate the viscous effect at a sharp corner. An empirical method for correcting the tunnel wall effect is developed here, the validity of which is supported by tests with models of three different sizes. An appreciable viscous effect has been found near the hinge of a deflected flap. Except for this effect, the theory and experiments are found to be in good agreement.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1965
Accession Number
AD0479297

Entities

People

  • M. C. Meijer

Organizations

  • California Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Boundaries
  • Boundary Layer
  • California
  • Contracts
  • Data Reduction
  • Flow Fields
  • Fluid Mechanics
  • Hydrodynamics
  • Leading Edges
  • Measurement
  • Mechanics
  • Pressure Distribution
  • Pressure Gradients
  • Pressure Measurement
  • Static Pressure
  • United States Government
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Fluid Dynamics.
  • Marine Hydrodynamics