Accession Number : ADP003052

Title :   Numerical Calculation of Free Surface Flow by Means of Modified Rankine Source Method,


Personal Author(s) : Ogiwara,S.

Report Date : 17 NOV 1983

Pagination or Media Count : 29

Abstract : The free surface flow around a ship is calculated by the method using Rankine Source distribution over the hull surface and undisturbed free surface. The free surface condition is linearized based on the double model flow and is applied at the undisturbed free surface, according to C.W. Dawson. The solution of wavy potential that satisfies the boundary condition of the hull surface and the free surface can be obtained by the iterative method. The present method is applied to calculate the wave profile, pressure distribution over the hull surface and wave resistance for the Wigley hull and the strut like hull form. The calculated results for the Wigley hull are compared with measured values. For the strut like hull form, the calculation are performed for both cases when the hull is moving with the sharp end ahead and with the blunt end ahead. (Author)

Descriptors :   *Water waves, Ship hulls, Surfaces, Water flow, Pressure distribution, Numerical methods and procedures, Iterations, Sources, Struts, Mathematical models, Sharp bodies, Blunt bodies, Resistance, Experimental data, Japan

Distribution Statement : APPROVED FOR PUBLIC RELEASE