带月池船舶的过度加速度失效模式衡准适用性研究

doi:10.19423/j.cnki.31-1561/u.2022.04.088

船舶 ›› 2022, Vol. 33 ›› Issue (04): 88-97.DOI: 10.19423/j.cnki.31-1561/u.2022.04.088

带月池船舶的过度加速度失效模式衡准适用性研究

段菲^1,2,3, 马宁^1,2,3, 顾解忡^1,2,3, 周耀华⁴

1. 上海交通大学海洋工程国家重点实验室上海 200240;
2. 上海交通大学船舶海洋与建筑工程学院上海 200240;
3. 上海交通大学海洋装备研究院上海 200240;
4. 中国船级社规范与技术中心上海 200135

收稿日期:2022-05-17 修回日期:2022-06-22 发布日期:2023-03-17
作者简介:段菲（1990-）,女,博士。研究方向:船舶耐波性。马宁（1961-）,男,博士,教授。研究方向:船舶操纵与控制、船舶耐波性、船舶数字化智能设计。顾解忡（1962-）,男,博士,副研究员。研究方向:浮体运动学、船舶水动力学、数字化船体运动预报。周耀华（1984-）,男,博士,高级工程师。研究方向:船舶稳性和航行安全
基金资助:
国家教育部、财政部重大科研专项(201335); 船舶数字化智能设计系统（二期）

On the Applicability of Excessive Acceleration Vulnerability Criteria for Ships With Moonpool

DUAN Fei^1,2,3, MA Ning^1,2,3, GU Xiechong^1,2,3, ZHOU Yaohua⁴

1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
3. Institute of Marine Equipment, Shanghai Jiao Tong University, Shanghai 200240, China;
4. Rules & Technology Center of China Classification Society, Shanghai 200135, China;

Received:2022-05-17 Revised:2022-06-22 Published:2023-03-17

摘要/Abstract

摘要： 过度加速度是涉及船舶大幅横摇运动的稳性失效模式之一。以某带月池海洋工程船为研究对象,对比分析船舶过度加速度薄弱性衡准在带月池船舶上的适用性。对比采用不同初始横倾角的横摇阻尼系数计算得到的船舶横向加速度与长期失效概率结果,研究月池横摇阻尼对船舶长期失效概率评估的影响。采用悬链线耦合模型约束船舶的横荡运动,通过可实现k-ε湍流模型模拟横浪中带月池船舶的六自由度运动,并与模型试验结果进行对比,验证采用CFD方法完成带月池船舶的过度加速度直接稳性评估的可行性。结果表明:第1层薄弱性衡准并不适用于本文样船,针对带月池样船,在过度加速度第2层薄弱性衡准评估中,建议采用10°初始横倾角的自由横摇衰减试验获得的等效线性横摇阻尼系数,基于CFD方法的带月池船舶的过度加速度直接数值模拟精度可接受。

关键词: 过度加速度, 月池, 薄弱性衡准, CFD模拟

Abstract: Excessive acceleration is one of the stability failure modes involving large-amplitude roll of a ship. The applicabilityof the vulnerability criteria of excessive acceleration for a ship with moonpool is compared and analyzed. The influence of the roll damping of the moonpool on the assessment of the ship long-term failure probability is studied by comparing the ship lateral acceleration and the long-term failure probability that are calculated by using the roll damping coefficients of different initial roll angles. The catenary mooring model is used to constrain the sway of the ship, and the six degrees of freedom (6-DoF) of the ship with moonpool in beam waves is simulated by using the Realizable turbulence model. The feasibility of using computational fluid dynamics (CFD) method to directly evaluate the stability of the ship with moonpool under excessive acceleration is validated by comparing with the experimental results. The results show that the Level 1 vulnerability criterion is not suitable for the sample ship, whereas for the sample ship with moonpool, the equivalent linear roll damping coefficient from the free roll attenuation test with an initial roll angle of 10° is recommended to be used in the Level 2 vulnerability criterion of the excessive acceleration. The accuracy of the direct numerical simulation of the excessive acceleration based on CFD method is acceptable for the ships with moonpool.

Key words: excessive acceleration, moonpool, vulnerability criterion, CFD simulation

中图分类号:

U661.2⁺2

段菲, 马宁, 顾解忡, 周耀华. 带月池船舶的过度加速度失效模式衡准适用性研究[J]. 船舶, 2022, 33(04): 88-97.

DUAN Fei, MA Ning, GU Xiechong, ZHOU Yaohua. On the Applicability of Excessive Acceleration Vulnerability Criteria for Ships With Moonpool[J]. Ship & Boat, 2022, 33(04): 88-97.

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带月池船舶的过度加速度失效模式衡准适用性研究

On the Applicability of Excessive Acceleration Vulnerability Criteria for Ships With Moonpool

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