Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference
Shanghai, China, June 5–10, 2022
Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE)
ISBN 978-1-880653-81-4; ISSN 1098-6189

www.isope.org

Hull form multi-objective optimization of DTMB5415 ship considering arrangement constraints
Baiwei Fenga,b, Chaohuan Yuea,b, Chengsheng Zhana,b,Haichao Changa,baKey Laboratory of High Performance Ship Technology, Wuhan University of Technology, Ministry of Education

Wuhan, Hubei, ChinabSchool of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology

Wuhan, Hubei, China

this field. At the same time, as the concept of "energy saving, emission
reduction, green ship" is put forward, more shipyards, design institutes
and research institutes begin to attach importance to and carry out ship
optimization design, which makes computational fluid dynamics (CFD)
develop vigorously, evaluation ability is significantly enhanced, and it
has gradually become practical.
Simulation Based Design (SBD) has been listed as a hot topic in theresearch of numerical Simulation technology in recent ITTC conferences.
This design method is to directly apply CFD technology andoptimization technology to the design of new hull form. The set
optimization objective (ship hydrodynamic performance) wasnumerically calculated by using CFD, and the hull form design space
was explored by using optimization algorithm and hull surface
modification technology, finally obtaining the hull form with the bestperformance under given constraints.
Li and Zhao (2014) deeply analyzed the key modules of SBD technology
and broke through the key technologies, integrated the automatic
optimization framework of hull lines, and verified the applicability of
SBD framework to hull lines design through examples. Huang and Yang
(2016) introduced the hydrodynamic design of hull lines based onsimulation. The resistance of a cargo ship is optimized, and then get thebest hull form is verified by calculation and experiment. The results
show that the hydrodynamic design tool based on simulation can beeffectively used in hull lines design to reduce drag. Wu and Liu (2013)
proposed a numerical multi-objective optimization program, OPTSHIPSJTU, which includes hull form modification module, fluid dynamics
performance evaluation module and optimization module. TakingDTMB5415 as the object, the final numerical results confirm theapplicability and reliability of this multi-objective optimization tool.
Daniele Peri from Rome Pool, Italy, Daniele and Campana (2003,2005)
from INSEAN Pool, Yusuke and Daniele (2008) from University ofTokyo, Japan, etc., combined numerical simulation technology withoptimization algorithm to realize the integration of CAD/CFD, andestablished the hull form optimization design framework based on CFD.
The simulation optimization design of hull lines is successfullycompleted, and the hull form with better hydrodynamic performance isobtained.

ABSTRACTHull form optimization, as one of the effective means of energy-saving
ship research and development, has been the attention of domestic andforeign researchers. In this paper, a numerical optimization process isproposed to describe the application of a practical ship multidisciplinary
design and optimization platform SHIPMDO-WUT developed by aresearch team at WuHan University of Technology. The platform iscomposed of ship parameterized deformation module, CFD calculation
module, hydrostatic calculation module and optimization module. In thispaper, the DTMB5415 ship is taken as the initial ship, and the surfacedeformation method of radial basis interpolation is adopted as theparameterized hull surface modification technology under the conditionof ensuring the arrangement constraints. The bow shape value points arechanged to generate a series of hull shapes that meet the arrangement
geometric constraints. Combined with CFD calculation tool and multiobjective particle swarm optimization (MOPSO), multi-objective
comprehensive optimization of wave resistance performance of theinitial ship at given two ship speeds was carried out, and we get a seriesof optimized ships finally. Two optimized ships were selected fornumerical simulation and comparative analysis with initial ship, and thenumerical calculation results verified the effectiveness and reliability ofthe optimized platform.

KEY WORDS: Optimization platform;
Radialinterpolation method; MOPSO; Wave resistance;
reduction

basis
Drag

INTRODUCTION
Hull form optimization design is a mathematical optimization problem
in ship engineering. Ship-related researchers and designers are trying toachieve goal-driven design by mathematical methods, which is a reverse
proposition of traditional ship design. In recent years, thanks to thedevelopment of computer and computational fluid dynamics, great
progress has been made in the optimization design of hull form based onhydrodynamic performance, and more academic researchers have joined

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