横摇运动下养殖工船水环境流场特性数值分析  

Numerical Analysis of Flow Field Characteristics in a Tank of Aquaculture Vessel under Rolling Motion

作　　者：崔铭超 王靖[1,2] 郭晓宇 CUI Mingchao;WANG Jing;GUO XiaoyiT(Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Sciences,Key Laboratory of Fishery Equipment and Engineering,Ministry of Agriculture,Shanghai 200092,China;Joint Research Laboratory for Deep Blue Fishery Engineering Equipment Technology,Qingdao National Laboratory for Marine Science and Technology,Qingdao 266237,China;Department of Engineering Mechanics,School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]中国水产科学研究院渔业机械仪器研究所,农业部远洋渔船与装备重点实验室,上海200092 [2]青岛海洋科学与技术国家实验室深蓝渔业工程联合实验室,青岛266237 [3]上海交通大学工程力学系,上海200240

出　　处：《中国造船》2020年第3期204-215,共12页Shipbuilding of China

基　　金：山东省支持青岛海洋科学与技术试点国家实验室重大科技专项(2018SDKJ0303-3)。

摘　　要：发展以大型游弋式养殖工船为核心的深远海养殖工程可为渔业养殖提供新的养殖手段。论文采用数值方法研究了养殖工船舱内水环境流场特性,采用数理统计方法分析水流速度分布的均匀性以及换水效率,建立了养殖船舱内水环境适渔性的评估方法。典型海况中船舶横摇运动对养殖鱼舱中流场的影响研究表明:横摇运动可加快水流速度缩短换水时间,但同时加剧了养殖水环境水流速度的非均匀性,相比之下进水射流形成的推流影响并不显著;横摇角和横摇周期的影响研究表明水流速度随横摇角增大而增大,而随着横摇周期的增大而减小;通过统计分析发现横摇角和横摇周期对水的停留时间影响不大;在养舱中心存在低速区,进水口产生的射流对低速区影响不大。Large-scale cruising aquaculture platform can provide new aquaculture methods for fishery.In this paper,influence of ship rolling motion on the flow field in the fish tank is numerically investigated under typical sea conditions,and uniformity of velocity distribution and water exchange efficiency is analyzed by mathematical statistics.The results show that the rolling motion can accelerate the water flow speed and shorten the water exchange time,but it will aggravate the non-uniformity of the flow velocity in the aquaculture water environment.In contrast,the effect of inlet jet on the flow is not significant.The flow velocity increases with the increase of rolling angle and decreases with the increase of rolling period.It is found that the rolling angle and rolling period have little effect on the residence time of the water.At the center of the tank,there is a low-speed zone,which is slightly affected by the inlet jet.

关 键 词：养殖舱 横摇 停留时间 速度均匀性 数理统计分析 

分 类 号：O352[理学—流体力学]