RESEARCH ON A PRACTICAL PREDICTION METHOD FOR SHIP MANOEUVRABILITY CONSIDERING WITH SHIP FORM

考虑船型的实用船舶操纵性预测方法研究

• 批准号: 04555103
• 负责人: KIJIMA Katsuro
• 金额: $ 8.77万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555103/
• 关键词: Hydrodynamic force; Manoeuvrability; Orediction; Slender Body Theory; Vortex Model; Cross flow Drag; cross flow drag; 操縦運動数学モデル; 船尾形状; 船体フレームライン形状; 船長体理論; 伴流モデル; クロスフロー

It will be very important ot estimate the hydrodynamic force acting on a ship for predicting ship manoeuvring characteristics by using mathematical model. This hydrodynamic force depends on especially the ship's form then it needs to estimate the hydrodynamic force acting on ship considering sufficiently with ship's form such as the frame line with high accuracy.On the hydrodynamic force, we estimated by using the slender body theory, and examined the flow pattern and generation point of free vortex. According to the investigated results, we can estimate the hydrodynamic force acting on a ship by considering with the generation point of free vortex. This generation point of the vortex should be decided as function of the hull form.Furthermore, this research investigated the cross sectional aspect of round edge effects on cross flow drag acting on rectangular cross section, which are theoretically investigated using of vortex model. From the results of numerical calculations, cross flow drag acting on rectangular cross section decrease abruptly as increasing corner radius, especially for the sections with a breadth to height ratio becoming larger.

利用数学模型预测船舶的操纵特性，对作用在船舶上的水动力进行估计是非常重要的。这种水动力特别依赖于船舶的形状，因此需要充分考虑船舶的形状，如框架线，对作用在船舶上的水动力进行高精度的估计。在水动力方面，利用细长体理论进行了估算，并对自由涡的流型和产生点进行了检验。根据研究结果，我们可以通过考虑自由涡的产生点来估计作用在船舶上的水动力。涡的产生点应根据船体形状的函数来确定。此外，本文还研究了圆形边缘的横截面对作用在矩形截面上的横流阻力的影响，并利用涡模型进行了理论研究。数值计算结果表明，矩形截面上的横流阻力随着转角半径的增大而急剧减小，特别是在宽高比增大的截面上。

项目成果

貴島勝郎: "かどに丸みを有する矩形断面に働くcross flow dragに関する研究" 日本造船学会論文集. 172. 1-8 (1992)

Katsuro Kijima：“作用于圆角矩形横截面的横流阻力的研究”日本造船学会汇刊 172. 1-8 (1992)。

Katsuro Kijima: "On a Prediction Method of Ship Maneuvering Characteristics" Proceedings MARSIM'93. 285-294 (1993)

Katsuro Kijima：“关于船舶操纵特性的预测方法”论文集 MARSIM93。

K.KIJIMA: "The Cross Flow Drag Action on Rectangular Cross-sections with Round Edge" Journal of The Society of Naval Architects of Japan. Vol.172. 1-8 (1992)

K.KIJIMA：“圆边矩形横截面的横流阻力作用”日本造船学会杂志。

K.KIJIMA: "Estimation of Hydrodynamic Forces Acting on a Hull in Manoeuvring Motion" Transactions of The West-Japan Society of Naval Architects. Vol.87. (1994)

K.KIJIMA：“机动运动中作用在船体上的水动力的估计”西日本造船学会会刊。

貴島勝郎: "船の操縦特性に及ぼす載荷状態および水深の影響に関する一考察" 西部造船会会報. 84. 97-106 (1992)

Katsuro Kijima：“装载条件和水深对船舶操纵特性影响的研究”西方造船师协会公报 84. 97-106 (1992)。