Original scientific paper

A Boundary Element Method for Motions and Added Resistance of Ships in Waves

Emanuela Ageno ; University of Genoa, Italy
Ermina Begovic orcid.org/0000-0002-1325-2771 ; University of Naples, Department of Industrial Engineering, Italy
Dario Bruzzone ; University of Genoa, Italy
AnnaMaria Galli ; University of Genoa, Italy
Paola Gualeni ; University of Genoa, Italy

Abstract

The accurate prediction of ship resistance in waves is nowadays of increased importance since it greatly influences ship performance regarding sustainable service speed and fuel consumption in seaways. Added resistance is considered as the longitudinal component of the second order mean force acting on a ship in waves and can be calculated from the first order ship motions by integrating the corresponding second-order pressure on the body surface.
The purpose of this paper is to present a methodology for the prediction of motions and added resistance by a three dimensional Rankine panel method and to discuss and validate its results by comparing them with experimental data. The prediction in the short wave range, where forces due to wave reflection dominate, has been made applying semi-empirical corrections proposed by Kuroda. Experimental data for the heave, pitch, and added resistance of an ITTC benchmark KRISO container ship have been compared with numerical ones, and the applicability of the proposed method is discussed.

Keywords

Rankine panel method; vertical motions in waves; added resistance; KRISO container ship (KCS); Kuroda correction

Hrčak ID:

141788

URI

https://hrcak.srce.hr/141788

Publication date:

15.7.2015.

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