Accession Number : ADA016935

Title :   Numerical Calculation of Second-Order Wave Resistance,

Corporate Author : CALIFORNIA UNIV BERKELEY COLL OF ENGINEERING

Personal Author(s) : Hong,Young Suck

Report Date : AUG 1975

Pagination or Media Count : 82

Abstract : The wave resistance due to the steady motion of a ship was formulated in Lagrangian coordinates by Wehausen (16). By introduction of an iteration scheme the solutions for the first order and second order were obtained. The draft/length ratio was assumed small in order to simplify numerical computation. In this work Wehausen's formulas are used to compute the resistance numerically. A few models are selected and the wave resistance is calculated. These results are compared with other methods and experiments. Generally speaking, the second-order wave resistance does show better agreement with measured wave resistance than the first-order theory does. However, the agreement is still not good enough so that computation can replace experiment, and indeed in certain cases the computed values show physically unacceptable behavior.

Descriptors :   *Ship hulls, *Ocean waves, Resistance, Equations of motion, Numerical analysis

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE