Analytical Prediction of Wall Effect on Fully Cavitating Lifting Foils, Using Nonlinear Theory.

Abstract

A Fortran computer program, compatable with the CDC 6000 series, has been developed to evaluate the effect of a closed-jet tunnel-test section on the force coefficients of arbitrarily cambered, sharp-nosed, fully cavitating, two-dimensional hydrofoil sections. The numerical solution to this problem has been obtained using the nonlinear theory developed by T. Y. Wu in 1969. The theory employs an open-wake model, commonly called the Roshko or transition-wake model, to represent the cavity downstream of the foil section. Results of the program include predicted force coefficients, streamline shapes and pressure coefficient distributions. Some comparisons are made with the predictions of two other nonlinear theories available for the infinite-stream case only. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1972
Accession Number
AD0755423

Entities

People

  • Elwyn S. Baker

Tags

DTIC Thesaurus Topics

  • Coefficients
  • Computer Programs
  • Computers
  • Hydrofoils
  • Pressure Distribution
  • Shape
  • Streamline Shape
  • Transitions
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Fluid Mechanics and Fluid Dynamics.
  • Marine Propulsion Engineering and Naval Architecture