摘要
为了防止海底管缆受到人为和自然环境损害,目前广泛采用射流挖沟机对管缆进行海底开沟埋设。针对射流挖沟机喷冲臂的形状设计和优化的问题,本文探讨了不同设计方案对喷嘴流速的影响。在相同入口压力条件下,考虑管道沿程损失和不同深度的喷嘴出口处的静压,采用理论分析和计算流体力学数值模拟相结合的方法进行喷冲臂形状设计。建立了一个有效的喷冲臂内部流动问题的数值模型,基于该模型计算了自主设计的3种喷冲臂内部流动并得到了最优喷冲臂设计方案。研究结果为今后射流挖沟机的研发提供了参考。
To prevent pipelines and cables from being damaged by humans and affected by natural environmental factors, it is generally necessary to bury them. In reference to the shape design and optimization of the spray arm, the influence of different design schemes on the nozzle flow velocity is discussed. Under the same inlet pressure condition, considering the loss along the pipeline and static pressure at the nozzle outlet in different depths, theoretical analysis, and computational fluid dynamic(CFD) numerical simulation are adopted for the design of the jetting arm. The solving scheme and numerical model are established to predict the internal flow. This model is employed to calculate the internal flow field of the three jetting arms, and the optimal design is obtained. The research results provide a reference for the design and development of jet trencher in the future.
作者
邹丽
金国庆
孙哲
徐伟桐
于游
ZOU Li;JIN Guoqing;SUN Zhe;XU Weitong;YU You(School of Naval Architecture,Dalian University of Technology,Dalian 116024,People’s Republic of China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,People’s Republic of China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2020年第2期271-276,共6页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(51522902,51579040)
青岛海洋科学与技术国家实验室开放基金项目(QNLM2016ORP0402)
中央高校基本科研业务费专项资金(DUT17ZD233,DUT17RC(3)017)
工业与信息化部联装[2016]22号
关键词
海底管缆
射流挖沟机
海底开沟
喷冲臂
喷嘴
计算流体力学
内部流动
submarine pipeline and cable
jet trencher
seafloor ditching
spray arm
nozzle
computational fluid dynamic(CFD)
internal flow
