摘要
利用Fluent软件对双层六直叶涡轮桨搅拌槽内的流场进行整体数值模拟,选用标准湍流模型及滑移网格法,考察搅拌桨高度对流场结构的影响,模拟得到搅拌槽内的流场分布和功率消耗,并同文献试验结果进行对比。结果表明:桨叶的空间位置的变化对搅拌槽流场性能的影响是非常明显的,改变双层桨叶位置分别产生了平行流、合并流和分散流,模拟成功预测了搅拌槽内速度分布和漩涡位置,3种流型的功率消耗存在较大的差异,平行流时的功耗最大。
The fluid flow in stirred tank with dual six-blade Rushton turbine was numerically simulated using fluent software.The turbulent model and sliding meshes were used in the simulation.The effects of the span of the impellers on the fluid flow were analyzed.The flow structure of stirred tank and power consumption was obtained,and compared with literature test results.The research indicates that the position of impeller is main influencing factor for flow structure in the stirred tank,parallel flow,merging flow and diverging flow were obtained by changing the position of impellers,vortex position and velocity distribution were also predicated successfully.Power consumption of three kinds of flow pattern is very difference,power consumption of parallel flow is the largest.
出处
《食品与机械》
CSCD
北大核心
2011年第1期71-73,共3页
Food and Machinery
关键词
滑移网格
双层涡轮桨
数值模拟
功率消耗
sliding meshes
dual Rushton turbine
numerical simulation
power consumption
