Numéro : 2749 - Year : 2020
CFD prediction of surface ship manoeuvring performance
Hugo FERRÉ - Naval Group SA – Hydrodynamics – Lorient (France)
Vincent TISSOT - SIREHNA – Naval Platform Modelling – Bouguenais (France)
During the surface ship design process, the manoeuvring performance is commonly predicted thanks to feedback and knowledge accumulated on many ships designed in the past, before being assessed by model tests and finally validated with sea trials.
Several model tests campaigns can be necessary in order to converge on a conception which respects all the objectives and constraints, which are often demanding. As an alternative, Naval Group has developed a new calculation method based on computational fluid dynamics (CFD) which allows to drastically reduce the design phase duration by replacing some - and in the future all - of the manoeuvrability model tests, and to enhance the optimization of the design.
This method simultaneously solves the fluid mechanics equations and Newton's second law of motion, at full scale, with a high fidelity model for hull-propellers-rudders interactions. The method predicts the turning circle performance with an uncertainty which is both satisfactory with respect to model tests and sea trial results on reference surface ships, and with computing time enabling an easy assessment of several variants during the preliminary design stages.
This paper is written in English
During the surface ship design process, the manoeuvring performance is commonly predicted thanks to feedback and knowledge accumulated on many ships designed in the past, before being assessed by model tests and finally validated with sea trials.
Several model tests campaigns can be necessary in order to converge on a conception which respects all the objectives and constraints, which are often demanding. As an alternative, Naval Group has developed a new calculation method based on computational fluid dynamics (CFD) which allows to drastically reduce the design phase duration by replacing some - and in the future all - of the manoeuvrability model tests, and to enhance the optimization of the design.
This method simultaneously solves the fluid mechanics equations and Newton's second law of motion, at full scale, with a high fidelity model for hull-propellers-rudders interactions. The method predicts the turning circle performance with an uncertainty which is both satisfactory with respect to model tests and sea trial results on reference surface ships, and with computing time enabling an easy assessment of several variants during the preliminary design stages.
This paper is written in English
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