A Nonlinear Mathematical Model of Motions of a Planing Boat in Irregular Waves
Abstract
A computer program previously developed to estimate the motions and accelerations of a planing craft in regular waves was modified and extended to compute the corresponding motions in random or irregular waves. Ten regular waves with random phase were combined to represent the random seaway. The amplitudes and frequencies that were selected represent the energy distribution of a Pierson-Moskowitz spectrum for a fully developed sea. A comparison of computed results with experiment indicates that the computer program can predict craft behavior with reasonable quantitative accuracy in moderate operating conditions. In severe operating conditions, however, the amplitudes of the computed vertical accelerations, which include impacts, are one-half of the experimental values.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1979
- Accession Number
- ADA078605
Entities
People
- David W Taylor
- Ernest E. Zarnick