Accession Number : ADA019492

Title :   Calculation of Three-Dimensional Boundary Layers on Ship Forms,

Corporate Author : IOWA INST OF HYDRAULIC RESEARCH IOWA CITY

Personal Author(s) : Chang,K. C. ; Patel,V. C.

Report Date : JUN 1975

Pagination or Media Count : 199

Abstract : An implicit finite difference technique, in curvilin ear-orthogonal surface coordinates, has been developed for the solution of the differential equations of three-dimensional laminar and turbulent boundary layers on ship forms. For turbulent flow, a two-layer eddy-viscosity model has been employed as the closure model. The initial and boundary conditions required to solve the equations and the stability and accuracy of the numerical method are discussed at some length. Two mathematically-defined simple three-dimensional ship forms are studied in some detail. These are a tri-axial ellipsoid and a double elliptic ship.

Descriptors :   *Ship hulls, *Boundary layer, *Hydrodynamics, Three dimensional flow, Laminar boundary layer, Turbulent boundary layer, Finite difference theory, Problem solving, Viscosity, Numerical methods and procedures, Models, Ellipsoids, Reliability

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE