Studies on a Mathematical Model for Manoeuvering Motions of Ships Moving Slowly in Shallow Waterways.

浅水航道缓慢航行船舶操纵运动数学模型研究。

• 批准号: 60460148
• 负责人: KOSE Kuniji
• 金额: $ 4.48万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60460148/
• 关键词: Mathematical model; Manoeuverability of ships; Harbour manoeuvres; Shallow-water effects; Tug performance; 操縦性に対する浅水影響

In the present report, an attempt is done to establish a mathematical model for manoeuvering motions of ships moving slowly in shallow waterways. The stuties contain the four parts mentioned below.(1) To investigate hydrodynamic properties of ships moving slowly, detailed captive model tests were carried out. Examining carafully the results of the tests, a new mathematical expression for hull forces is derived on the assumption of quasi-steady state from the practical viewpoint.(2) Shallow water effects on hull forces were investigated by captive model tests. The effects on main derivatives are reported.(3)Performances of tugs were studied and the limits of the pushing abili ties were estimated.(4)The procedure to determine hydrodynamic derivatives is discussed and A kind of memory effect on the measured hydrodynamic forces is reported. The quasi-steady mathematical model is recommended from the practical view-point.(5)Manoeuvering motions in harbours are investigated and the concept of elemental manoeuvers is proposed to grasp the ship motions in harbours.

本文试图建立浅水中船舶慢行操纵运动的数学模型。本研究包括以下四个部分。(1)为研究船舶低速运动时的水动力特性，进行了详细的系留模型试验。本文从实用的角度出发，在准稳态假设下，对试验结果进行了仔细的分析，导出了一个新的船体力的数学表达式。(2)通过系留模型试验研究了浅水对船体受力的影响。报告了对主要衍生物的影响。（3）对拖轮的性能进行了研究，并对拖轮的顶推能力极限进行了估算。（4）讨论了确定水动力导数的方法，并报道了对所测水动力的一种记忆效应。从实用角度出发，推荐了准稳态数学模型。（5）研究了港内船舶的操纵运动，提出了基本操纵的概念，以掌握港内船舶的运动。

项目成果

KOSE KUNIJI: "STUDIES ON TUG PERFORMANCES IN HARBOURS" REPORT OF JAPAN SHIPBUILDING RESEARCH ASSOCIATION. (1986)

KOSE KUNIJI：日本造船研究会的“港口拖船性能研究”报告。

Kuniji KOSE et al: Naval Architecture and Ocean Engineering. vo1.23. 15-24 (1986)

Kuniji KOSE 等人：造船与海洋工程。

KOSE KUNIJI, HINATA HIROKI, HASHIZUME YASUHIA, FUTAGAWA EIJIRO: "ON A MATHEMATICAL MODEL OF MANOEUVRING MOTIONS OF SHIPS IN LOW SPEEDS" NAVAL ARCHITECTURE AND OCEAN ENGINEERING. 23. 15-24 (1986)

KOSE KUNIJI、HINATA HIROKI、HASHIZUME YASUHIA、FUTAGAWA EIJIRO：“船舶低速操纵运动的数学模型”海军建筑和海洋工程。

小瀬邦治他: 日本航海学会論文集. 74号. 29-34 (1985)

Kuniharu Kose 等人：日本航海学会会议录，第 74. 29-34 号（1985 年）。

KOSE KUNIJI: "ON STANDARD MATHEMATICAL MODEL OF MANOEUVRING MOTIONS OF SHIPS MOVING SLOWLY" REPORT OF JAPAN SHIPBUILDING RESEARCH ASSOCIATION. 150R. 2-26 (1986)

KOSE KUNIJI：日本造船研究会的报告《关于缓慢移动船舶操纵运动的标准数学模型》报告。