铜合金编织网网片阻力水槽试验研究  

Experimental research on resistance of copper alloy woven net in water tank

作　　者：王磊[1,2] 王鲁民 万荣[2] 刘永利[1] 齐广瑞[1] 宋炜[1] WANG Lei;WANG Lumin;WAN Rong;LIU Yongli;QI Guangrui;SONG Wei(Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation,Ministry of Agriculture,East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China;College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]中国水产科学研究院东海水产研究所,农业农村部东海与远洋渔业资源开发利用重点实验室,上海200090 [2]上海海洋大学海洋科学学院,上海201306

出　　处：《渔业现代化》2022年第3期55-62,共8页Fishery Modernization

基　　金：科技部国家重点研发计划“蓝色粮仓科技创新专项(2019YFD0900904)”;财政部和农业农村部国家现代农业产业技术体系资助项目(CARS-47);中国水产科学研究院基本科研业务费项目(2020TD76)。

摘　　要：开展水槽试验获得铜合金编织网网片的阻力,以分析铜合金编织网网衣的阻力变化规律及水动力性能。试验制作了10片0.25 m^(2)不同铜丝直径及不同网目尺寸的铜合金编织网网片,于拖车静水槽中采用三分力传感器连接网片以测试网片受力,在0.30、0.45、0.60、0.75和0.85 m/s 5个拖车速度下开展水槽试验,每片网片在不同流速下都测得了0°~90°冲角范围,以10°间隔为节点共计10个冲角的阻力数据。结果显示:网片的阻力随流速的增加而增大,随着迎流冲角的增大,网片的阻力也在增加;相同网线直径的网片在特定流速与冲角下,其阻力随网目尺寸的增加而减小;相同网目尺寸的网片在特定流速与冲角下,其阻力随网线直径的增加而增大。基于网片试验数据,利用回归分析法得出铜合金编织网网衣在垂直流速时随流速变化的单位面积网衣阻力计算公式;利用点状图回归分析法得出铜合金编织网在垂直流速与平行流速两种状态下的阻力系数和雷诺数的对应关系;参考经验公式提出不同冲角下阻力系数的推导公式,并基于试验数据给出网片平面垂直于流速及平行于流速状态下的阻力系数,分别为1.20和0.21。本研究可为铜合金编织网网衣的受力计算以及水动力性能分析提供参考。A water tank experiment was carried out to study the resistance of the copper alloy woven net,for obtaining the resistance changing law of the series of specifications of copper alloy woven net.Ten square copper alloy nets of 0.25 m^(2) were produced with different copper wire diameters and different mesh sizes.Three-component force sensors connected to the net were used to test the force of the net in the static water tank.The water tank test was carried out at 5 trailer speeds of 0.30,0.45,0.60,0.75,and 0.85 m/s,respectively.Each net was measured at a range of 0°-90°attack angle at different flow rates,and there were resistance data for 10 attack angles at an interval of 10°as the nodes.The results showed that the resistance of the net increased with the increase of the flow velocity.Similarly,with the increase of the attack angle of the forward flow,the resistance of the net also increased;under a specific flow rate and angle of attack,the resistance of the net with the same wire diameter decreases with the increase of the mesh size;the resistance of the net with the same mesh size at a specific flow rate and attack angle increased with the increase of the wire diameter.Based on the test data,the calculation formula of the net resistance per unit area of the copper alloy woven net was obtained with the regression analysis method,when the vertical flow velocity changes with the flow velocity;the relationship between the resistance coefficient and the Reynolds number of the copper alloy woven net under the two states of vertical flow velocity and parallel flow velocity was obtained by using the dot graph regression analysis method;the derivation formula of the resistance coefficient under different attack angles was proposed by referring to the empirical formula,and the drag coefficients when the mesh plane was perpendicular to the flow velocity and parallel to the flow velocity were also given based on the experiment data,which are 1.20 and 0.21,respectively.This study can provide a reference for the calcula

关 键 词：铜合金编织网 网片 阻力 水槽试验 

分 类 号：S971.4[农业科学—捕捞与储运]