双臂架四片式虾拖网水动力性能试验研究  

Experimental study on the hydrodynamic performance of double-rig four-panel shrimp trawl

作　　者：王伦国 李玉岩[1] 黄六一[1] 张荣军 冯卫东 WANG Lunguo;LI Yuyan;HUANG Liuyi;ZHANG Rongjun;FENG Weidong(College of Fisheries,Ocean University of China,Qingdao Shandong 266003,China;China National Fisheries Corporation,Beijing 100160,China)

机构地区：[1]中国海洋大学水产学院,山东青岛266003 [2]中国水产有限公司,北京100160

出　　处：《渔业信息与战略》2021年第3期186-192,共7页Fishery Information & Strategy

基　　金：国家重点研发计划(2020YFD0901205);塞拉利昂代表处项目(20180132)。

摘　　要：双臂架虾拖网作业是西非沿岸捕虾作业的主要捕捞方式。以西班牙441 kW渔船用的双臂架四片式虾拖网为研究对象,根据田内准则,设计和制作拖网模型并进行水槽试验,试验研究其在不同拖速与水平扩张比下的水动力性能。结果表明,该网具阻力随着拖速的增加而上升,且呈幂指数关系,指数在1.3左右,随水平扩张比的增加呈上升趋势;拖网的网口高度随拖速及水平扩张比的增加而下降;网具的能耗系数随着拖速的增加呈现快速上升的趋势,在低拖速下与水平扩张比的关系不明显。研究可为我国四片式虾拖网网具设计与优化提供参考依据。Double-rig four-panel shrimp trawl is the main vessel to catch shrimp along the coast of the West Africa. In this study, the Spanish four-panel trawl for 441 kW trawler in the West Africa was taken as the research object. According to Tauti criterion, we designed the model trawl to study the hydrodynamic performance under different towing speeds and horizontal expansion ratios(L/S) by flume tank experiment. Results showed that the resistance of the trawl increased with the increase of towing speed and presented a power exponential relationship, and the index was around 1.3. The resistance increased with the increase of L/S. The height of trawl net opening decreased with the increasing towing speed and L/S. The energy consumption coefficient of trawler increased rapidly with the increase of towing speed, but had no obvious relationship with horizontal expansion ratio at low towing speed. The power was also exponentially related to the towing speed. This study can provide references for the design and optimization of four-panel shrimp trawl in China.

关 键 词：虾拖网 水动力性能 模型试验 网口高度 能耗系数 

分 类 号：S972[农业科学—捕捞与储运]