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A study of hydrodynamics of planing flat catamaran and prismatic hulls

Xie, Nan and Vassalos, Dracos (2011) A study of hydrodynamics of planing flat catamaran and prismatic hulls. International Shipbuilding Progress, 58 (2-3). pp. 115-139. ISSN 0020-868X

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Abstract

A numerical investigation of hydrodynamic force and pressure distribution for planing hull has been carried out. The problem is solved by using a pressure patch distribution method. The method is based on potential flow theory and with a linearised free surface boundary condition. In some of the previous studies, it was found that the inversed pressure distribution on the planing hull will be oscillating, i.e., a numerical instability problem occurred. In the present study, a robust numerical approach was adopted to calculate the elementary solution of a pressure patch moving on the free surface. The numerical approach is applied to flat plate, flat plate catamaran and prismatic planing hulls. No numerical instability has been found for the predicted pressure distribution on the planing hulls. The predicted results are compared with those of other published numerical calculations and model tests, a fairly good agreement has been found.

Item type: Article
ID code: 36054
Keywords: hydrodynamics, pressure patch method, numerical prediction, planing catamaran, prismatic planing hull, Naval architecture. Shipbuilding. Marine engineering, Mechanical Engineering, Ocean Engineering
Subjects: Naval Science > Naval architecture. Shipbuilding. Marine engineering
Department: Faculty of Engineering > Naval Architecture and Marine Engineering
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Depositing user: Pure Administrator
Date Deposited: 25 Nov 2011 11:33
Last modified: 05 Sep 2014 13:52
URI: http://strathprints.strath.ac.uk/id/eprint/36054

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