Comparative analysis of warp-chine and wigley shapes 0n resistance assessment of a Pentamaran

Wiwin Sulistyawati, Yanuar, Agus Sunjarianto Pamitran

Research output: Contribution to journalArticle

Abstract

This paper investigated the effect of the shape diversity of hulls and their positions to wave resistance, wave interference, and far-field wave patterns of a pentamaran. The investigations were using experimental and application of design tool based on Michell’s thin ship theory on the various clearances and stagger. The models used a hard chine hull, typically for a planning ship that recommended by Savitsky, and another one, Wigley. Comparison of calculations and experimental was not satisfactory, especially at Fn below 0.5, possibly due to viscous factors were still influential at low speed where the theoretical incapable of predicting the valuable. Based on Michell calculation, the deviation of both wave and interference resistance between the two models was to 36.6%, 58.3%, respectively, with the warp-chine model had lower wave resistance than Wigley. The experimental results exhibited that the wave component of all models has decreased with rising of stagger at Fn> 0.5. The deviation in average between test and calculation of tool on wave resistance for Wigley of 8.25% and warp-chine by 11.8%. Furthermore, the differences of far-field wave patterns between two models had been illustrated by the computational tool on the sectoral patch of the aft of the ship.

Original languageEnglish
Pages (from-to)99-107
Number of pages9
JournalCFD Letters
Volume11
Issue number12
Publication statusPublished - 1 Jan 2019

Keywords

  • Pentamaran
  • Wave interference
  • Wave pattern
  • Wave resistance

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