The University of Southampton
University of Southampton Institutional Repository

Analysis and prediction of motions of high speed planing craft in waves

Wilson, P.A. and Blake, J.I.R. (1998) Analysis and prediction of motions of high speed planing craft in waves In High Speed Motions and Manoeuvrability. Proceedings. RINA (Royal Institution of Naval Architects). 13 pp, pp. 1-13. (doi:10.3940/rina.hscm.1998.1).

Record type: Conference or Workshop Item (Paper)

Abstract

A theoretical method has been developed to model a high speed planing craft in waves with particular emphasis on the non-linearfties associated with high speed motion. These non-linearities include, amongst others, hydrodynamic impact loading, bottom emergence and forces due to large changes in wetted surface area and wetted length.The method consists of a 2D time simulation model based on a modified stop theory approach. The hydrodynamic coefficients are usually considered to be constant for most linear applications. For planing craft in waves, the draft and wetted lengths are very time dependent and so the equations of motion are solved in the time domain.The benefits of a two-dimensional method include the ability to provide accurate solutions without the need to solve the full 3D fluid problems. The method is flexible enough to include an added resistance solution and investigation into hydroolastic responses.In order to validate the theoretical model, a high speed planing craft of simple prismatic geometry has been tested and the dynamics analysed through the use of standard towing tank equipment. However, in order to measure such effects as change in wetted area and length and spray sheet generation, a different technique is required. A new technique in data acquisition is presented whereby the data is acquired using a computer vision system. Computer vision is a technique involving the manipulation of digital pictures and object properties within the image measured and defined. The use of computer vision to analyse video footage of the high speed test provides a non-contact form of measurement; allows the experiment to be carried out repeatedly with emphasis on specified parameters with simultaneous visual observation of particular phenomena allowing cross correlation of the identified fature.

Full text not available from this repository.

More information

Published date: 1998
Venue - Dates: High Speed Motions and Manoeuvrability, 1998. Royal Institution of Naval Architects, London., 1998-01-01 - 1998-01-01
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 51135
URI: http://eprints.soton.ac.uk/id/eprint/51135
PURE UUID: d9260aa7-b3b8-4f02-81f5-1cdc20d348e4
ORCID for P.A. Wilson: ORCID iD orcid.org/0000-0002-6939-682X

Catalogue record

Date deposited: 08 May 2008
Last modified: 17 Jul 2017 14:49

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×