Calculation of Wave Elevations in Ship Wakes by Using the Swim Free-Surface (SWIMFS) Code

摘要

SWIMFS, a linearized free-surface potential flow program, has been developed and used to compute and analyze the near- and far-field wave elevations in the wakes of ships moving in calm water. Wake contours and three-dimensional perspective plots are presented for two ships using computer graphics. The contour plots of the near-field results have been compared with those obtained by the XYZFS computer program. Additional comparisons of the two codes have been made by plotting longitudinal cuts of the wave heights. The results show that--in spite of numerical noise in the computations of SWIMFS--the computed wave patterns behind ships are qualitatively correct, and the computed bow-wave elevations are comparable with those calculated using XYZFS.