喷水推进船舶骑浪横甩薄弱性衡准校核方法  

Surf-riding/broaching vulnerability criteria assessment method for waterjet propelled ships

作　　者：封培元 蔡佑林[1,3] 范佘明 FENG Pei-yuan;CAI You-lin;FAN She-ming(Science and Technology Laboratory on Waterjet Propulsion,Shanghai 201100,China;Shanghai Key Laboratory on Ship Engineering,Shanghai 200011,China;Marine Design and Research Institute of China,Shanghai 200011,China)

机构地区：[1]喷水推进技术重点实验室,上海201100 [2]上海市船舶工程重点实验室,上海200011 [3]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶力学》2024年第8期1133-1140,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51709240)。

摘　　要：当前国际海事组织(IMO)二代稳性规范中骑浪/横甩稳性失效模式的第二层薄弱性衡准校核方法仅适用于采用常规螺旋桨推进方式的船舶。然而,采用喷水推进方式的船舶同样属于该稳性失效模式的敏感船型,因此有必要建立此类船舶的规范校核方法。本研究通过类比螺旋桨推力模型,建立喷水推进系统的力学模型,在不改变当前骑浪/横甩第二层薄弱性衡准校核理论方法和框架的前提下,通过最少的流程变动实现适用于喷水推进船舶的第二层薄弱性衡准校核,并基于实泵数据和样船算例证明所提出方法的有效性。基于研究成果形成专门针对喷水推进船舶的规范校核方法,突破当前规范在船舶推进方式方面的局限性,不但使规范变得更为完备,而且能为喷水推进船舶的稳性安全评估提供有利的技术支撑。The current Level 2 vulnerability criteria assessment method for the surf-riding/broaching stabili⁃ty failure mode of the IMO Second Generation Intact Stability Criteria only applies to ships using convention⁃al propellers.However,waterjet propelled ships are also prone to this stability failure mode.Therefore,it is necessary to establish a regulatory assessment method for such a ship type as well.This study established a mechanical model for waterjet propulsion systems through the analogy to the model for propellers.The Level 2 vulnerability assessment method applicable to waterjet propelled ships was proposed and validated based on the actual pump data and sample ship calculations.A specific assessment method for waterjet propelled ships was proposed to overcome the limitation on propulsion type,which not only makes the regulation more complete,but also provides technical support for the stability safety assessment of waterjet propelled ships.

关 键 词：二代稳性 骑浪/横甩 喷水推进 薄弱性衡准 校核流程 

分 类 号：U661.22[交通运输工程—船舶及航道工程]