基于CFD-EDM的自动投饵饲料颗粒气力输送数值模拟
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摘要
针对深水网箱自动投饵系统颗粒饲料气力输送时易阻塞与破损的问题,为揭示自动投饵系统中颗粒饲料的气力输送运动特性,开展了管道颗粒饲料气固两相流的数值模拟研究。基于气固两相流理论,分别建立了计算流体模型与离散元模型,通过计算流体力学与离散单元法(computational fluid dynamics-discrete element method,CFD-EDM)耦合求解,对饲料颗粒从气力输送管道初始阶段到稳定阶段的运动过程进行了分析,得到颗粒从初始状态到运动稳定阶段的颗粒位置分布情况。对不同位置管道内压力进行了分析对比,得到从管道入口到颗粒运动稳定状态时刻的压降。模拟仿真结果为自动投饵装备的模拟仿真与优化设计提供了参考,使其可以对饲料颗粒运动有更好的导向性,更好地降低弯管处颗粒碰撞的能量损失。
During the pneumatic conveying process of automatic feeding systems for deep-water off-shore cage culture, blockages of pipeline and damage to feed pellets occur easily. To reveal the pneumatic transport characteristics of pellet feed in automatic feeding system, a numerical simulation of gas-solid two-phase flow of feed pellets in a pipeline was carried out. Based on gas-solid twophase flow theory, both a computational fluid dynamics(CFD) model and discrete element model were established. The movement process of feed particles from initial stage to stable stage of pneumatic conveying pipeline was analyzed, and the position distribution of feed particles from initial stage to stable stage was obtained. Pressures at various locations in the pipeline were analyzed and compared to determine the pressure drop between the pipeline inlet and the instant at which the flow reached the steady state. The results provide references for the simulation and optimization design of automatic baiting equipment, which can better guide the movement of feed particles and reduce the collision energy loss of particles at elbow.
During the pneumatic conveying process of automatic feeding systems for deep-water off-shore cage culture, blockages of pipeline and damage to feed pellets occur easily. To reveal the pneumatic transport characteristics of pellet feed in automatic feeding system, a numerical simulation of gas-solid two-phase flow of feed pellets in a pipeline was carried out. Based on gas-solid twophase flow theory, both a computational fluid dynamics(CFD) model and discrete element model were established. The movement process of feed particles from initial stage to stable stage of pneumatic conveying pipeline was analyzed, and the position distribution of feed particles from initial stage to stable stage was obtained. Pressures at various locations in the pipeline were analyzed and compared to determine the pressure drop between the pipeline inlet and the instant at which the flow reached the steady state. The results provide references for the simulation and optimization design of automatic baiting equipment, which can better guide the movement of feed particles and reduce the collision energy loss of particles at elbow.
引文
[1]郭根喜,陶启友,黄小华,等.深水网箱养殖装备技术前沿进展[J].中国农业科技导报,2011,13(5):44-49.
[2]庄保陆,郭根喜.水产养殖自动投饵装备研究进展及其应用[J].南方水产,2008,4(4):67-72.
[3]胡昱,郭根喜,汤涛林,等.基于MCGS的深水网箱自动投饵远程控制系统的设计[J].渔业科学进展,2010,31(6):110-115.
[4]胡昱,郭根喜,黄小华,等.基于PLC的深水网箱自动投饵系统[J].南方水产科学,2011,7(4):61-68.
[5]宋协法,路士森.深水网箱投饵机设计与试验研究[J].中国海洋大学学报(自然科学版),2006,36(3):405-409.
[6]TURMELLE C A,SWIFT M R,CELIKKOL B,et al.Design of a20-ton capacity finfish aquaculture feeding buoy[C].2006 Oceans MTS,Boston,2006:1-6.
[7]TSUNODA T,KITAZAWA D,KINOSHITA T,et al.Concept of an offshore aquaculture system with an automated feeding platform[C].Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering,Estoril,2008:527-534.
[8]De MORAES M S,MUI?OS TORNEIROS D L,da SILVAROSA L,et al.Experimental quantification of the head loss coefficient K for fittings and semi-industrial pipe cross section solid concentration profile in pneumatic conveying of polypropylene pellets in dilute phase[J].Powder Technol,2017,310(4):250-263.
[9]VASQUEZ N,FAN Y,JACOB K.Effect of material elasticity and friction on particle dynamics during dilute pneumatic conveying[J].Powder Technol,2016,303(12):90-99.
[10]BHATTARAI S,OH J H,EUH S H,et al.Simulation study for pneumatic conveying drying of sawdust for pellet production[J].Drying Technol,2014,32(6):1142-1156.
[11]祝先胜.气力输送管内气固两相流动的数值模拟[D].上海:华东理工大学,2015:6-8.
[12]王明旭,秦超,李永祥,等.气力输送过程中粮食颗粒的输送特性研究[J].农机化研究,2014(9):18-22.
[13]卢洲,刘雪东,潘兵.基于CFD-DEM方法的柱状颗粒在弯管中输送过程的数值模拟[J].中国粉体技术,2011,17(5):65-69.
[14]OEHME M,AAS T S,S?RENSEN M,et al.Feed pellet distribution in a sea cage using pneumatic feeding system with rotor spreader[J].Aquacult Engin,2012,51(11):44-52.
[15]HALSTENSEN M,IHUNEGBO F N,RATNAYAKE C.Online acoustic chemometric monitoring of fish feed pellet velocity in a pneumatic conveying system[J].Powder Technol,2014,263(9):104-111.
[16]TURIDSYNN?VE A,MAIKE O,METTE S.Analysis of pellet degradation of extruded high energy fish feeds with different physical qualities in a pneumatic feeding system[J].Aquacult Engin,2011,44(1):25-34.
[17]杜俊,胡国明,方自强,等.稀相气力输送CFD-DEM仿真中两种模型的比较[J].海军工程大学学报,2015,27(2):57-60.
[18]丁岩峰,孙奉昌,张春霞.射流喷射器用于干渣气力输送的实验研究[J].中国粉体技术,2014,20(1):75-78.
[19]刘晓斌,段广彬,刘宗明,等.水平弯管内气固两相流的试验研究与数值模拟[J].济南大学学报(自然科学版),2012,26(3):230-235.
[20]李志华,刘凯,李州,等.炭黑在水平管道中气力输送的数值模拟与分析[J].起重运输机械,2012(1):46-50.
[21]杨洪雷,靳世平,刘小康.煤粉气力输送过程中采用不同输送管径的数值模拟研究[J].工业加热,2015,44(4):62-64.
[22]李丹阳,刘姝,王晓宁.颗粒粒径对气力输送影响的数值模拟与分析[J].中国粉体技术,2015,21(6):8-11.
[2]庄保陆,郭根喜.水产养殖自动投饵装备研究进展及其应用[J].南方水产,2008,4(4):67-72.
[3]胡昱,郭根喜,汤涛林,等.基于MCGS的深水网箱自动投饵远程控制系统的设计[J].渔业科学进展,2010,31(6):110-115.
[4]胡昱,郭根喜,黄小华,等.基于PLC的深水网箱自动投饵系统[J].南方水产科学,2011,7(4):61-68.
[5]宋协法,路士森.深水网箱投饵机设计与试验研究[J].中国海洋大学学报(自然科学版),2006,36(3):405-409.
[6]TURMELLE C A,SWIFT M R,CELIKKOL B,et al.Design of a20-ton capacity finfish aquaculture feeding buoy[C].2006 Oceans MTS,Boston,2006:1-6.
[7]TSUNODA T,KITAZAWA D,KINOSHITA T,et al.Concept of an offshore aquaculture system with an automated feeding platform[C].Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering,Estoril,2008:527-534.
[8]De MORAES M S,MUI?OS TORNEIROS D L,da SILVAROSA L,et al.Experimental quantification of the head loss coefficient K for fittings and semi-industrial pipe cross section solid concentration profile in pneumatic conveying of polypropylene pellets in dilute phase[J].Powder Technol,2017,310(4):250-263.
[9]VASQUEZ N,FAN Y,JACOB K.Effect of material elasticity and friction on particle dynamics during dilute pneumatic conveying[J].Powder Technol,2016,303(12):90-99.
[10]BHATTARAI S,OH J H,EUH S H,et al.Simulation study for pneumatic conveying drying of sawdust for pellet production[J].Drying Technol,2014,32(6):1142-1156.
[11]祝先胜.气力输送管内气固两相流动的数值模拟[D].上海:华东理工大学,2015:6-8.
[12]王明旭,秦超,李永祥,等.气力输送过程中粮食颗粒的输送特性研究[J].农机化研究,2014(9):18-22.
[13]卢洲,刘雪东,潘兵.基于CFD-DEM方法的柱状颗粒在弯管中输送过程的数值模拟[J].中国粉体技术,2011,17(5):65-69.
[14]OEHME M,AAS T S,S?RENSEN M,et al.Feed pellet distribution in a sea cage using pneumatic feeding system with rotor spreader[J].Aquacult Engin,2012,51(11):44-52.
[15]HALSTENSEN M,IHUNEGBO F N,RATNAYAKE C.Online acoustic chemometric monitoring of fish feed pellet velocity in a pneumatic conveying system[J].Powder Technol,2014,263(9):104-111.
[16]TURIDSYNN?VE A,MAIKE O,METTE S.Analysis of pellet degradation of extruded high energy fish feeds with different physical qualities in a pneumatic feeding system[J].Aquacult Engin,2011,44(1):25-34.
[17]杜俊,胡国明,方自强,等.稀相气力输送CFD-DEM仿真中两种模型的比较[J].海军工程大学学报,2015,27(2):57-60.
[18]丁岩峰,孙奉昌,张春霞.射流喷射器用于干渣气力输送的实验研究[J].中国粉体技术,2014,20(1):75-78.
[19]刘晓斌,段广彬,刘宗明,等.水平弯管内气固两相流的试验研究与数值模拟[J].济南大学学报(自然科学版),2012,26(3):230-235.
[20]李志华,刘凯,李州,等.炭黑在水平管道中气力输送的数值模拟与分析[J].起重运输机械,2012(1):46-50.
[21]杨洪雷,靳世平,刘小康.煤粉气力输送过程中采用不同输送管径的数值模拟研究[J].工业加热,2015,44(4):62-64.
[22]李丹阳,刘姝,王晓宁.颗粒粒径对气力输送影响的数值模拟与分析[J].中国粉体技术,2015,21(6):8-11.
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