[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.3744/JNAOE.2012.4.2.162

Two-dimensional modeling of stepped planing hulls with open and pressurized air cavities

Matveev, Konstantin I. (School of Mechanical and Materials Engineering, Washington State University)

Publication Information

International Journal of Naval Architecture and Ocean Engineering / v.4, no.2, 2012 , pp. 162-171 More about this Journal

Abstract

A method of hydrodynamic discrete sources is applied for two-dimensional modeling of stepped planing surfaces. The water surface deformations, wetted hull lengths, and pressure distribution are calculated at given hull attitude and Froude number. Pressurized air cavities that improve hydrodynamic performance can also be modeled with the current method. Presented results include validation examples, parametric calculations of a single-step hull, effect of trim tabs, and performance of an infinite series of periodic stepped surfaces. It is shown that transverse steps can lead to higher lift-drag ratio, although at reduced lift capability, in comparison with a stepless hull. Performance of a multi-step configuration is sensitive to the wave pattern between hulls, which depends on Froude number and relative hull spacing.

Keywords

Planing boat; Stepped hull; Air-cavity ship; Method of hydrodynamic singularities;

Citations & Related Records

Times Cited By Web Of Science : 0 (Related Records In Web of Science)

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