A Rankine Panel Method for Added Resistance of Ships in Waves

Author:

Söding Heinrich1,Shigunov Vladimir2,Schellin Thomas E.3,Moctar Ould el3

Affiliation:

1. Institute of Fluid Dynamics and Ship Theory, Hamburg University of Technology, Schwarzenbergstrasse 95C, 21073 Hamburg, Germany e-mail:

2. DNV GL, Brooktorkai 18, 20457 Hamburg, Germany e-mail:

3. DNV GL, Brooktorkai 18, 20457 Hamburg, Germany

Abstract

A new Rankine panel method and an extended Reynolds-Averaged Navier–Stokes (RANS) solver were employed to predict added resistance in head waves at different Froude numbers of a Wigley hull, a large tanker, and a modern containership. The frequency domain panel method, using Rankine sources as basic flow potentials, accounts for the interaction of the linear periodic wave-induced flow with the nonlinear steady flow caused by the ship's forward speed in calm water, including nonlinear free surface conditions and dynamic squat. Added resistance in waves is obtained by the pressure integration method. The time domain RANS solver, based on a finite volume method, is extended to solve the nonlinear equations of the rigid body six-degrees-of-freedom ship motions. The favorable comparison of the panel and RANS predictions demonstrated that the Rankine method is suitable to efficiently obtain reliable predictions of added resistance of ships in waves. Comparable model test predictions correlated less favorably, although the overall agreement was felt to be acceptable, considering the difficulties associated with the procedures to obtain accurate measurements.

Publisher

ASME International

Subject

Mechanical Engineering,Ocean Engineering

Reference31 articles.

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2. Speed Loss in Waves and Wave-Induced Torsion of a Wide-Breadth Containership;J. Eng. Marit. Environ.,2011

3. Experiments and Calculations on 4 Wigley Hull Forms in Head Waves,1992

4. Bingjie, G., and Steen, S., 2010, “Added Resistance of a VLCC in Short Waves,” ASME 29th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2010) Shanghai, China, June 6–11, pp. 609–617.10.1115/OMAE2010-20115

5. Hong, S. Y., 2011, “Wave Induced Loads on Ships,” Joint Industry Project II, MOERI, Report No. BSPIS503A-2207-2 (confidential).

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