Accession Number : AD0766431

Title :   A Modified Froude Method for Determining Full-Scale Resistance of Surface Ships from Towed Models,

Corporate Author : NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD

Personal Author(s) : Granville,Paul S.

Report Date : JUL 1973

Pagination or Media Count : 31

Abstract : The Froude method for extrapolating the resistance of towed ship models to full-scale conditions has been modified with respect to the prediction of viscous resistance from an equivalent flat-plate resistance. A form factor for extrapolation is to be determined from a boundary-layer calculation of a uniquely defined equivalent body of revolution. Examples of form factors calculated for the LUCY ASHTON and a hull with a block coefficient of 0.8 are discussed. (Author)

Descriptors :   (*SHIPS, *DRAG), (*TEST METHODS, TOWED BODIES), HYDRODYNAMICS, MODEL TESTS, VISCOSITY, BOUNDARY LAYER, BODIES OF REVOLUTION

Subject Categories : Marine Engineering
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE