弯曲灌装管道内油制辣椒流场的模拟分析  

Simulation and analysis of chili flow characteristics in bending filling pipes

作　　者：周鹏[1] 于丽娅[1] 何玲[1] 杨政通 

机构地区：[1]贵州大学现代制造技术教育部重点实验室,贵州贵阳550003

出　　处：《食品与机械》2016年第4期98-102,159,共6页Food and Machinery

基　　金：国家自然科学基金(编号:51475097);贵州省重大科技专项(编号:黔科合重大专项字[2012]6008)

摘　　要：为优化油辣椒灌装管道设计,以油辣椒固液多相流体为研究内容,以水平90°弯管模型为对象,计算适合该灌装管道模型的油制辣椒湍流临界速度,利用多相流Mixture模型分别对入口流速为5,7,9 m/s的油辣椒制品固液多相混合流体进行模拟,分析弯管内固液多相流的速度场和密度场分布情况,并与单一辣椒油流动性进行对比。结果表明:流速大于临界湍流速度时输送效果较为理想,当流速低于临界速度时,容易发生沉降现象;几何弯曲对多相流场影响较大,弯管段与出料口之间直管长度不宜过大。研究结果可为油辣椒制品灌装设备设计提供有利的理论依据。In order to optimize the design of chili＇s Filling pipeline,taking solid-liquid multiphase fluid of chili as the research content,90°horizontal bend model as the research object,calculating the suitable turbulence critical speed for the chili filling pipeline,using the mixture model of multiphase flow,the distribution of velocity field and density field was analyzed with inlet flow rate as 5,7,9 m/s.The results show that it is easy to form stratification when the speed is less than the critical speed.Geometric bend has large influence on multiphase flow field.The length of straight pipe section between the elbow and spout should not be too large.The results provide favorable data bases for filling conveyor speed setting in the oil pepper products filling equipment.

关 键 词：油制辣椒 Mixture模型 弯管 固液多相流 灌装速度 管道设计 

分 类 号：TS264.2[轻工技术与工程—发酵工程]