摘要
为降低船载式投饲机饲料输送过程中饲料颗粒的破损率,减少额定输送速率的能量损耗。采用CFDEDEM耦合仿真方法分析不同入口风速和接头弯径对饲料管道气固两相流特性的影响。对比分析了20、26、30和40 m/s的入口风速,60、90、120和180 mm接头弯径对颗粒运动特性、气流场分布规律的影响。结果显示:入口风速为26~30 m/s时饲料颗粒碰撞次数和气流场压损较低;接头弯径为120 mm时管道饲料颗粒输送顺畅,气流分布均匀且能量损失低。故选择26 m/s的入口风速和120 mm附近的接头弯径,可以有效降低船载式投饲机的饲料颗粒破损率和气力输送能量损失。该研究可为船载式投饲机的金鲳鱼投饲作业和装备研究提供理论参考。
In order to reduce the damage rate of feed particles and reduce the energy loss of rated conveying rate in the feed conveying process of ship-borne feeder.The effects of inlet wind speed and joint bend diameter on gas-solid two-phase flow characteristics of feed pipeline were analyzed by CFD-EDEM coupling simulation method.The influences of inlet wind speed at 20,26,30 and 40 m/s,joint bend diameters at 60,90,120 and 180 mm on particle movement characteristics and airflow field distribution were compared and analyzed.The results showed that the number of feed particle collisions and the pressure loss of airflow field were lower when the inlet wind speed was 26-30 m/s.When the bending diameter of the joint is 120 mm,the feed particles are transported smoothly,the air distribution is uniform and the energy loss is low.Therefore,choosing the inlet wind speed of 26 m/s and the joint bend diameter near 120 mm can effectively reduce the breakage rate of feed particles and the energy loss of pneumatic conveying of the ship-borne feeder.This study can provide theoretical reference for the feeding operation and equipment research of Golden Pompano in ship-borne feeder.
作者
俞国燕
陈振雄
刘皞春
姬文超
张宏亮
YU Guoyan;CHEN Zhenxiong;LIU Haochun;JI Wenchao;ZHANG Hongliang(Southern Marine Science and Engineering Guangdong Laboratory(Zhanjiang),Zhanjiang 524255,Guangdong,China;School of Mechanical and Power Engineering,Guangdong Ocean University,Guangdong Provincial Marine Equipment and Manufacturing Engineering Technology Research Center,Zhanjiang 524088,Guangdong,China)
出处
《渔业现代化》
CSCD
2022年第2期10-17,共8页
Fishery Modernization
基金
南方海洋科学与工程广东省实验室(湛江)项目(ZJW-2019-01)
2021年广东省海洋经济发展专项(011Z21001)
广东省普通高校重点科研项目(2018KZDXM038)
湛江市创新创业团队引育“领航计划”项目(2020LHJH003)
湛江市现代海洋渔业装备重点实验室项目(2021A05023)。
