Study on Unstable Phenomena in Transverse Stability for High Speed Craft

高速船横向稳定性不稳定现象研究

• 批准号: 05452310
• 负责人: KIJIMA Katsuro
• 金额: $ 4.42万
• 依托单位: KYUSHU 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: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452310/
• 关键词: High Speed Craft; Transverse Stability; Unstable Phenomena; Capsising; 横傾斜; 傾斜モーメント; 復原力

It is well known that the transverse stability of a high speed craft might occur the unstable phenomena at running more than a certain speed even though the stability possess adequate static stability at rest condition. The phenomena of this kind are complex, and it will be difficult to investigate the mechanism of the phenomena.This paper is to clear the mechanism of unstable phenomena of transverse stability in high speed craft. The numerical calculations for the dynamic pressure acting on ship's body were carried out on a model craft with ship's length 3.6m by using slender body theory of Maruo.According to the results of numerical calculation, the heeling moment of the craft increased with ship speed increasing, specially with over Froud's number 0.8. This tendency on phenomena was verified by the model test.From these investigations, one of the main reason for unstable phenomena in transverse stability is that the dynamic pressure acting on ship's body changes with ship speed increasing. Simultaneously the distribution of the dynamic pressure will change along to the longitudinal direction, then this pressure causes yaw moment.

众所周知，高速船舶的横向稳定性即使在静止状态下具有足够的静稳定性，但在超过一定速度时仍可能出现不稳定现象。这类现象十分复杂，对其机理的研究难度较大。本文旨在阐明高速船舶横向稳定不稳定现象产生的机理。利用Maruo的细长船体理论，对船身动压力进行了数值计算。数值计算结果表明，随着船速的增加，特别是超过弗劳德数0.8时，艇侧倾力矩增大。模型试验验证了这一现象的趋势。从这些研究中可以看出，横向稳定性不稳定现象的主要原因之一是作用在船体上的动压力随船速的增加而变化。同时，动压力的分布会沿纵向发生变化，这种压力会产生偏航力矩。

项目成果

鷲尾祐秀,永松哲郎,貴島勝郎: "高速艇の横安定性の改良に関する研究" 西部造船会会報. 86. 77-86 (1993)

Yuhide Washio、Tetsuro Nagamatsu、Katsuro Kijima：“提高高速船横向稳定性的研究”西方造船师协会通报 86. 77-86 (1993)。

Yushu WASHIO: "On the Improvement of Transverse Stability for High Speed Craft" Transactions of The West Japan Society of Naval Architects. Vol.86. 77-86 (1993)

Yushu WASHIO：《关于提高高速船横向稳定性》西日本造船学会会刊。

貴島 勝郎,前川 和義,烏野 慶一: "操縦運動時の主船体流体力の推定について" 西部造船会々報. 87. 135-143 (1994)

Katsuro Kijima、Kazuyoshi Maekawa、Keiichi Karasuno：“机动运动期间主船体流体力的估计”《西方造船学会杂志》87. 135-143 (1994)。

K.KIJIMA: "Estimation of Hydrodynamic Forces Acting on a Hull in Manoeuvring Motion" Transactions of The West-Japan Society of Naval Architects. Vol.87. 135-144 (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,前川和義,鳥野慶一: "操縦運動時の主船体流体力の推定について" 西部造船会会報. 87. 135-144 (1994)

Katsuro Kijima、Kazuyoshi Maekawa、Keiichi Torino：“机动运动期间主船体流体力的估计”西方造船师协会公报 87. 135-144 (1994)。