INVESTIGATING THE COMPARISON OF SHIP RESISTANCE COMPONENTS BETWEEN U AND V-SHAPED HULLS

Muhammad Luqman Hakim*, Tuswan, Ahmad Firdaus, Ocid Mursid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The selection of a hull design with minimal drag is an important effort to reduce emission levels on ships. Two different hull shapes, U and V hulls, have unique properties that affect their drag production, which has been studied extensively in the past. This study aims to re-examine the differences between the two hull types by conducting a simple analysis of drag prediction results using empirical and numerical slender body methods. Both hull models in this study have the same size and volume. The results indicate that the U hull has a higher frictional resistance (RF ) than the V hull due to its wider wetted surface area (WSA). Additionally, the viscous pressure resistance (RVP ) and form factor coefficient (K) of the U hull are also higher than those of the V hull. However, for Froude numbers (Fr) above 0.245, the U hull has lower wave resistance (RW ) than the V hull, whereas for Fr below 0.245, the U hull has higher RW . Overall, the U hull produces a higher total resistance (RT ) than the V hull at low speeds, but a lower RT at high speeds. Therefore, the choice of hull shape for minimizing a ship's resistance is influenced by the desired speed of service. If Fr is low, below 0.24, a V-shaped hull is more suitable. However, if Fr is higher than 0.24, a U-shaped hull is more appropriate.

Original languageEnglish
Pages (from-to)153-164
Number of pages12
JournalJurnal Teknologi
Volume85
Issue number3
DOIs
Publication statusPublished - May 2023
Externally publishedYes

Keywords

  • Formdata
  • Hull shape
  • U hull
  • V hull
  • ship resistance

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