The Effect of Nose Radius on the Cavitation-Inception Characteristics of Two-Dimensional Hydrofoils

Abstract

Results of an analytical investigation of the cavitation properties of modified marine propeller-type hydrofoils are presented. In particular, dependence of the critical cavitation number and the cavitation-free, angle-of- incidence range on changes in the leading-edge thickness is determined. It is shown that within a narrow range of changes of leading-edge thickness, a delay in inception is possible, depending on the design problem under consideration. An increase in critical inception speed, accompanied by a sacrifice in some of the cavitation-free, angle-of-incidence range occurs for a small increase in the leading-edge thickness. A range of thickness changes exists for which beneficial results can be obtained.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1974
Accession Number
AD0785834

Entities

People

  • Daniel T. Valentine

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Airfoils
  • Blades
  • Control Surfaces
  • Engineers
  • Equations
  • Geometry
  • Hydrofoils
  • Leading Edges
  • Marine Propellers
  • Mechanical Engineering
  • Model Basins
  • Pressure Distribution
  • Propeller Blades
  • Surfaces
  • Trailing Edges
  • Two Dimensional
  • Vapor Pressure

Fields of Study

  • Physics

Readers

  • Aerodynamics/Aeronautics.
  • Systems Analysis and Design
  • Underwater engineering and Marine Technology.