A numerical and experimental study of resistance, trim and sinkage of an inland ship model in extremely shallow water

Conference paper (2017)

Authors

Q. Zeng Ship Design, Production and Operations - Mechanical, Maritime and Materials Engineering
R.G. Hekkenberg Ship Design, Production and Operations - Mechanical, Maritime and Materials Engineering
C.H. Thill Ship Hydromechanics and Structures - Mechanical, Maritime and Materials Engineering
E. Rotteveel Ship Design, Production and Operations - Mechanical, Maritime and Materials Engineering
Research Group
Ship Design, Production and Operations (Mechanical, Maritime and Materials Engineering) (TU Delft)
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Published Date

2017

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Marine and Transport Technology

Research Group

Ship Design, Production and Operations

Abstract

Inland vessels generally experience a resistance increment when the water in which they sail is extremely shallow. In this case, resistance extrapolation from ship model to full scale becomes complicated, and the traditional approaches do not often lead to satisfactory predictions. In this study, both numerical and experimental methods were applied to investigate the ship resistance, trim and sinkage in extremely shallow water. In the numerical calculations, the model initially has a trim and sinkage obtained from the model tests. The overset mesh technique was used to save the meshing effort. A 1/30 scaled model, which is only allowed to pitch and heave, was used in the model tests. It was found that, in extremely shallow water, the ITTC57 correlation line is not sufficient to extrapolate the resistance.

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