Development of numerical simulation methods contributing to advanced safety assessment of damaged ships

2016 Fiscal Year Final Research Report

• Project/Area Number: 25289317
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Naval and maritime engineering
• Research Institution: Kobe University (2014-2016); Osaka University (2013)
• Principal Investigator: Hashimoto Hirotada 神戸大学, 海事科学研究科(研究院), 准教授 (30397731)
• Co-Investigator(Kenkyū-buntansha): 末吉 誠 九州大学, 応用力学研究所, 助教 (80380533) ; 梅田 直哉 大阪大学, 工学(系)研究科(研究院), 准教授 (20314370) ; 河村 昂軌 国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (80757724)
• Research Collaborator: TERADA Daisuke 水産研究・教育機構, 水産工学研究所, 主任研究員 ; TANIGUCHI Yuuki 神戸大学, 大学院海事科学研究科, 学術研究員 ; KAWAKAMI Nagisa 大阪大学, 大学院工学研究科 ; MUNESUE Takahiro 神戸大学, 大学院海事科学研究科
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 損傷時復原性 / 浸水シミュレーション / 粒子法 / GPGPU / 大型クルーズ船 / 自動車運搬船 / 模型実験 / 計算領域分割法

Outline of Final Research Achievements

Regarding a numerical simulation method for the prediction of ship motions in damaged condition, which combines the estimation of hydrodynamic forces by a particle method for the damaged part and a potential theory for the intact part, an explicit MPS method which has good scalability was adopted and it was extended to a simulation code which can execute large-scale simulation on GPU clusters. This advancement makes it possible to use a sufficient number of fluid particles required for flooding analysis, so quantitative prediction of transient behavior of a Pure Car Carrier during flooding and of complicated flooding in the car compartment was realized. A significant progress was also made in the pre-processing that automatic generation of wall particles from CAD data was achieved. It was also confirmed that something new problems do not arise in the application to a large cruise ship.

Free Research Field

船舶海洋工学