Dynamic Simulation of Pelagic Longline Retrieval

作     者：SONG Liming QI Yukun LI Jie SHEN Zhibin ZHANG Xinfeng SHEN Xi 

作者机构：College of Marine Sciences Shanghai Ocean University National Engineering Research Centre for Oceanic Fisheries Shanghai Ocean University Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources (Shanghai Ocean University)Ministry of Education Collaboration Innovation Center for National Distant-Water Fisheries 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2019年第18卷第2期

页      面：455-466页

核心收录：

学科分类：07[理学] 

基　　金：funded by the National High Technology Research and Development Program of China (No. 2012 AA092302) the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20113104110004) Shanghai Municipal Education Commission Innovation Project (No. 12ZZ168) 

主　　题：pelagic longline retrieval dynamic simulation visualization 

摘      要：To improve fishing gear efficiency, it is important to understand the interactions among sea current, fishing vessel, line hauler, and catches during pelagic longline gear retrieval. In this study, fishing gear configuration parameters, operational parameters, and 3 D ocean current data were collected from Indian Ocean. Dynamic models of pelagic longline gear retrieval were built using the lumped mass method and solved using the Euler-Trapezoidal method. From the results, the pulling force of line hauler exerted on the gear was 2800–3600 N. There were no significant differences(P 0.05) between the time of the hook retrieval measured at sea and that obtained from the simulation. The absolute values of the movement velocity at representative nodes along the X, Y, and Z axes were 0.01–25.5 m s^(-1). These results suggest that the dynamic model of longline fishing gear retrieval can be used to analyze the interactions among sea current, fishing vessel, line hauler, longline gear, and catches, and to acquire the basic data for optimizing the design of the line hauler. Moreover, the model can serve as a reference to study the hydrodynamic performance of other fishing gears during the hauling process.