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1990 Fiscal Year Final Research Report Summary

Improvement of Prediction of Maneuvering Performance in Shallow Water

Research Project

Project/Area Number 01302036
Research Category

Grant-in-Aid for Co-operative Research (A)

Allocation TypeSingle-year Grants
Research Field 船舶抵抗・運動性能・計画
Research InstitutionDepartment of Naval Architecture & Ocean Engineering Faculty of Engineering The University of Tokyo

Principal Investigator

FUJINO Masataka  Facul. of Engi. The University of Tokyo Prof., 工学部・船舶海洋工学科, 教授 (10010787)

Co-Investigator(Kenkyū-buntansha) KIJIMA Katsuro  Faculty of Engineering Kyuushuu University Prof., 工学部, 教授 (90038042)
KOSE Kuniji  Faculty of Engineering Hirosima University Prof., 工学部, 教授 (40034409)
HAMAMOTO Satomi  Faculty of Engineering Oosaka University Prof., 工学部, 教授 (30107130)
KOBAYASI Hiroaki  Tokyo Univ. of Merchantile Marine Assist. Prof., 商船学科, 助教授 (70016963)
KARASUNO Keiichi  Faculty of Fisheries Hokkaido Univ. Prof., 水産学部, 教授 (80031467)
Project Period (FY) 1989 – 1990
KeywordsManeuvering motions / Shallow water / Hydrodynamic force / Mathematical model / Stopping maneuvers
Research Abstract

Accurate prediction of manoeuvering motions is essential requirement for enhancing the navigation safety of ships. The usefulness of numerical simulation of maneuvering performance in deep water has been fully established for the case where a ship travels at a moderate forward speed. On the contrary, more efforts are necessary to clarify the hydrodynamic aspects relating to maneuvering motions in shallow water and to validate the mathematical model developed to describe the hydrodynamic forces on a ship traveling in shallow water.
In the present research, main emphasis is placed on the following two items ;
(1) development of mathematical models for hydro- dynamic forces acting on a ship traveling at a low speed and in shallow water. Especially, development of mathematical models useful even when a ship has excessive sway velocity and/or yaw angular velocity.
(2) Examination of usefulness of numerical simulation of stopping maneuvers of ships with reverse rotation of propellers.
Concerning the first item, an extensive amount of captive model tests were carried out, and then a mathematical model was proposed. Regarding the second item, results of numerical simulation of stopping maneuvers were compared with the results of free-running model tests. As a result, it was confirmed that the macroscopic qualities of stopping maneuvers, i. e. track reach, head reach, side reach, stopping time and stopping angle could be predicted by numerical simulations with enough accuracy for practical purpose.

  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] Masataka Fujino,Hirosi Kagemoto: "Prediction of Stopping Manoeuvres" MARSIM & ICSM 90 Tokyo,Japan,June. 319-330 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤野 正隆,影本 浩,石井 裕司,常楽 弘明: "浅水域における船のプロペラ逆転停止性能について" 日本造船学会論文集. 第168号. (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Fujno, Masataka: "Prediction of stopping Maneuvers" MARSIM & ICSM 90 Tokyo, Japan. 319-330 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Fujino, Masataka: "Stopping maneuvers of a ship due to the reverse rotation of propeller in shallow water" Journal of The Society of Naval Architects of Japan. No. 168. (1990)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-08-12  

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