Validation and verification of a planing craft motion prediction model based on experiments conducted on full-size crafts operating in real sea

Himabindu Allaka, Morel Groper

Research output: Contribution to journalArticlepeer-review

Abstract

Planing crafts encounter large accelerations and motions when operated at high speeds in a seaway. To enhance their design and operability, accurate prediction of the accelerations and motions which these crafts will exhibit in a seaway is necessary. Here, validation and testing of a computational model for motion assessment of a planing craft in a seaway (MAPCS) are presented. To the best of the author’s knowledge, the literature does not contain studies of validation and verification of motion prediction models with full-size crafts operated in a real sea. The presented experiments were conducted on two planing crafts significantly different in size—a small remotely controlled craft (retrofitted Jet-Ski) and a large 24.8-m craft—both operated in a real sea. The MAPCS model, based on two-dimensional strip theory, improves previously developed motion assessment models by embedding within it a near-transom pressure correction and improved added-mass theory and provides computed values for acceleration, angular velocity, and expected motions. The incoming sea waves were measured by a wave buoy, deployed separately and developed in-house, and validated using a standard ocean observatory wave buoy. The wave-induced pitch and vertical acceleration computed by the MAPCS model are compared with the experimental recorded data and the differences are addressed.

Original languageEnglish
Pages (from-to)1199-1216
Number of pages18
JournalJournal of Marine Science and Technology
Volume25
Issue number4
DOIs
StatePublished - 1 Dec 2020

Keywords

  • Hydrodynamics
  • Motion assessment
  • Planing craft
  • Strip theory

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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