摘要
为优化贻贝脱肉装置的脱肉过程参数,基于水射流贻贝自动脱半壳关键技术及装备系统,建立喷嘴出口水射流打击到贻贝的三维实体模型,利用Fluent软件的VOF两相湍流模型,对喷嘴流出的水射流打击到贻贝过程进行了仿真模拟,分别研究了喷嘴进口水射流速度和温度、喷嘴出口与距离点水平相对位置(AB轴)及距离点垂线上的速度分布、贻贝倾斜角度,并进行户外试验验证。结果显示:当喷嘴的进水口温度为40℃,进水口速度为110 m/s,贻贝的倾斜角度为14°,喷嘴出口速度在距离贻贝6.5 cm处,最大速度达到400 m/s;在距离点垂线上(Y向)速度呈对称分布,越靠近AB轴速度越大,最大可达到424 m/s;仿真模拟与模型性能试验结果进行了对比,表明最优工况时数据模拟与试验结果吻合较合理,在保证贻贝脱肉后贝肉具有较高的完整度同时,使水射流速度达到最大,以提高脱肉的效率。
In order to optimize the processing parameters of mussel shucking devices,based on the key technology and the system of automatic water jet half-shelling equipment,a three-dimensional solid model of water jet from a nozzle outlet striking the mussel was established.The VOF two-phase turbulence model of Fluent software was used to simulate the striking process of water jet from the nozzle to the mussel.The velocity and temperature of the water jet at the nozzle inlet,the relative horizontal positions between the nozzle outlet and the distance point(Axis AB),the velocity distribution on the vertical line of the distance point,and the tilt Angle of the mussel were studied respectively,and the outdoor verification test was carried out.The results show that a maximum velocity of 400 m/s was reached when the nozzle inlet temperature was 40℃,inlet velocity 110 m/s,mussel tilt Angle 14°and the outlet velocity of the nozzle was 6.5 cm away from the mussel.On the vertical line(in the Y direction)of the distance point,the velocity was symmetrically distributed,and the closer to the AB axis,the greater the velocity was,and the maximum velocity could reach 424 m/s.The simulation results were compared with the model performance experiment results,indicating that the data simulation and test results were in reasonable agreement under optimal working conditions,which not only guaranteed the high integrity of mussel flesh after shucking,but also maximized water jet velocity and improved shelling efficiency.
作者
宋祖超
李振华
罗尔霖
倪洋
SONG Zuchao;LI Zhenhua;LUO Erlin;NI Yang(School of Marine Engineering Equipment,Zhejiang Ocean University,Zhoushan 316022,Zhejiang,China)
出处
《渔业现代化》
CSCD
2021年第5期104-112,共9页
Fishery Modernization
基金
舟山市科技计划项目(2018C21006)。
关键词
贻贝
脱肉装置
喷嘴
水射流
速度分布
仿真模拟
mussel
shucking devices
nozzle
water jet
velocity distribution
simulation
