文献类型：期刊文献

英文题名：Dynamic Response of Deep-Sea Trawl System during Towing Process

作者：Zhang, Dapeng[1];Zhao, Bowen[2];Zhu, Keqiang[3];Jiang, Haoyu[4]

机构：[1]Guangdong Ocean Univ, Ship & Maritime Coll, Zhanjiang 524088, Peoples R China;[2]Zhejiang Univ, Ocean Coll, Zhoushan 316000, Peoples R China;[3]Ningbo Univ, Fac Maritime & Transportat, Ningbo 315211, Peoples R China;[4]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 316021, Peoples R China

年份：2023

卷号：11

期号：1

外文期刊名：JOURNAL OF MARINE SCIENCE AND ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000917526900001)、、Scopus(收录号：2-s2.0-85146798133)、WOS

基金：This research was funded by the Program for Scientific Research Start-up Funds of Guangdong Ocean University, grant number 060302072101, and Zhanjiang Marine Youth Talent Project-Comparative Study and Optimization of Horizontal Lifting of Subsea Pipeline, grant number 2021E5011, and the National Natural Science Foundation of China, grant number 62272109.

语种：英文

外文关键词：dynamic response; towing process; rigid truss trawl system; flexible trawl system; lumped mass method

外文摘要：The trawl system plays an irreplaceable role in deep-sea fishing. In the towing process of the trawl system, many complex mechanical phenomena occurs, so it is necessary to analyze the dynamic response of the deep-sea trawl system during the towing process. In this paper, an equivalent mathematical model for predicating the movement of the ocean trawl system is established based on the equivalent net theory. In the proposed method, the lumped mass method is used to simulate the towed cable and some lines with hydrodynamic characteristics are used to simulate the fishing net. The effects of towing speeds on the dynamic characteristics of a rigid truss trawl system and a flexible trawl system during straight-line towing and rotation towing are studied. The results show that it is possible to simulate trawl motion, and the trawling process is well-presented using this equivalent mathematical model. The disadvantage of this method is also obvious, that is, it cannot simulate trawls with a large number of meshes because the proliferation of mesh numbers can lead to difficult computational convergence. The results also demonstrate that during straight-line towing, the higher the speed, the greater the tension of the cable. Due to the rigid truss, the shape of the rigid truss trawl under different towing speeds is not much different, while the shape of the flexible trawl system changes greatly. During rotating towing, the tension of the cable changes abruptly in the initial stage, and then fluctuates periodically in the time domain. With the increase of towing speed, the overall outward floating distance of the trawl increases gradually. This study has a certain reference and guiding role for deep-sea fishing operations.