Accession Number : AD0745791

Title :   A Singular Perturbation Method of Calculating the Behavior of Supercavitating Hydrofoils with Rounded Noses,

Corporate Author : CALIFORNIA INST OF TECH PASADENA DIV OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Furuya,Okitsugu

Report Date : JUN 1972

Pagination or Media Count : 117

Abstract : A simple, direct and accurate method to predict the pressure distribution on supercavitating hydrofoils with rounded noses is presented. The thickness of body and cavity is assumed to be small. The method adopted in the present work is that of singular perturbation theory. Far from the leading edge, linearized free streamline theory is applied. Near the leading edge, however, where singularities of the linearized theory occur, a non-linear local solution is employed. The two unknown parameters which characterize this local solution are determined by a matching procedure. A uniformly valid solution is then constructed with the aid of the singular perturbation approach. (Author)

Descriptors :   (*HYDROFOILS, FLUID DYNAMICS), HYDRODYNAMIC CONFIGURATIONS, BLUNT BODIES, CAVITATION, FLOW SEPARATION, LIFT, DRAG, PERTURBATION THEORY

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE