A Design Aspect of Relative Wave Heights of Ships in Rough Seas by 3-D Source Technique with Forward Speed

摘要

This paper deals with the numerical calculations of relative wave height of ships in short crested irregular waves. Here linear potential theory is used to describe the fluid motion and 3-D sink-source technique has been used to determine hydrodynamic forces for surface ship advancing in waves at constant forward speed. For the simulation of the random sea, a fully probabilistic technique has been applied. Time domain simulation of relative wave height of typical container and oil/ore carrier in short crested irregular waves have been carried out for three different sea states. The numerical results of the maximum and the significant values of irregular relative wave heights for these conditions are discussed by comparing with some requirements by a classification society of shipping.