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Planing hull performance from model tests

journal contribution
posted on 2023-05-16, 19:57 authored by Thornhill, E, Oldford, D, Neil Bose, Veitch, B, Liu, P
A set of bare hull resistance tests were performed on a 1/8 scale model of an 11.8 m long planing hull. The model was tested over a range of speeds and ballast conditions in calm water. Measurements were made of tow force, running trim, and sinkage. Wetted areas and lengths were determined using underwater video. Flush mounted pressure taps gave gauge pressures at various locations on the hull surface. Wave profiles were measured using an array of capacitance probes positioned laterally in the tank. Boundary layer velocity profiles were resolved at two locations on the hull for several model speeds using a laser Doppler velocimeter (LDV). Pressures under the aft region of the hull were found to be lower and velocities just outside of the boundary layer were found to be higher than predicted by simple planing theory.

History

Publication title

International Shipbuilding Progress

Volume

50

Issue

1 & 2

Pagination

5-18

ISSN

0020-868X

Department/School

Australian Maritime College

Publisher

Delft University Press

Place of publication

Netherlands

Repository Status

  • Restricted

Socio-economic Objectives

Oceanic processes (excl. in the Antarctic and Southern Ocean)

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