Numerical investigation on fast displacement ship hydrodynamics

7th Modern Technologies in Industrial Engineering

工业技术（总论）

Pacuraru, S.^1 ; Pacuraru, F.^1 ; Presura, A.^1

Dunarea de Jos University of Galati, Faculty of Naval Architecture, Department of Naval Architecture, 47 Domneasca Street, Galati

800008, Romania^1

关键词: Carbon dioxide emissions;    Displacement ship;    Effective solution;    High energy efficiency;    Hydrodynamic parameters;    Hydrodynamic performance;    Numerical investigations;    Propulsion system;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/591/1/012111/pdf
DOI  :  10.1088/1757-899X/591/1/012111

学科分类：工业工程学

来源: IOP

【 摘 要 】

In last decade, sustained efforts have been made to improve ship energy efficiency, to reduce fuel consumption and carbon dioxide emissions by means of optimizing the hull forms and propulsion system. The aim of the present paper is to search for solutions to improve the fast-displacement hull forms of passenger ships that navigate on the Danube river and the Black Sea coast, leading to high energy efficiency, reduced emissions and minimised shore-side effects. To investigate the flow around a 31 m fast-displacement monohull passenger ship, a series of 5 numerical simulations for a range of speeds between 4.5 and 12.5 m/s were performed in order to estimate the forces acting on the ship, but also to analyse the hydrodynamic parameters of the flow. Based on the first series of calculation, several solutions to improve the hydrodynamic performance of the hull are considered. The two most effective solutions found have been the trim edge and the interceptor. Different configurations and angles have been systematically investigated in order to find the most efficient geometrical parameters. Finally, the hull with trim wedge leads to a reduction of the power consumption by 2.4 to 5.5% and the interceptor by 2.8 to 8.8%, for speeds higher than 8.4 m/s. For speeds lower than 8.4 m/s the power consumption is higher than bare hull. Moreover, the solutions proposed are easy to implement for new built ships, but also for ships in operation.