Multi-objective hull form optimization of trimaran’s total drag at different speeds

Xinwang Liu, Decheng Wan, Changhong Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A trimaran usually consists of a main hull and two side hulls which has already been an important type of high-performance vessels. In order to reduce its total drag at different speeds for the need of saving energy and reducing pollution, the hull form optimization solver OPTShip-SJTU is used, and the spacing of side hulls and the shape parameters of the main hull can be changed and regarded as optimization design variables. Furthermore, the total drag of the trimaran is evaluated based on the potential flow theory after verifying the reliability of the potential-flow-based NMShip-SJTU solver. After evaluations of new sample hulls created by Optimal Latin Hypercube Sampling method, Kriging surrogate models are then constructed and validated to save the computational cost. Finally, a multi-objective optimization program is implemented to obtain the optimal hulls, and the selected typical optimal trimarans are further analyzed to ensure the optimization effects.

Original languageEnglish
Title of host publication30th International Ocean and Polar Engineering Conference
PublisherInternational Society of Offshore and Polar Engineers
Pages3850-3857
Number of pages8
ISBN (Electronic)9781880653845
Publication statusPublished - 2020
Event30th International Ocean and Polar Engineering Conference, ISOPE 2020 - Virtual, Online
Duration: Oct 11 2020Oct 16 2020

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2020-October
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference30th International Ocean and Polar Engineering Conference, ISOPE 2020
CityVirtual, Online
Period10/11/2010/16/20

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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