摘要
应用动网格技术以及多相流模型中的VOF模型计算分析了一种带搅拌结构的卧式双轴再沸器的功率特性.CFD模拟结果表明,总的功率准数与相对应的表观雷诺数的关系为Np=7.15(,Re*)-0.775,表观雷诺数的指数为-0.775,即功率准数的对数与表观雷诺数的对数呈线性关系,但并不成倒数关系;黏度、流速以及搅拌轴位置对功率的大小均有一定影响.
The power performances of a horizontal biaxial stirring device were computed and analyzed, using the dynamic meshing model and VOF model. The CFD result shows that the total power number versus Reynolds number is Np = 7.15 （Re＊）-0.775. That is to say, the logarithmic power number decreases linearly with the logarithmic apparent Reynolds number in the laminar regime on a log-log plot, but the index of the apparent Reynolds number is - 0.775 and therefore into a reciprocal relationship does not exist. It also shows that viscosities, flow rates and position of the shafts all have some impact on the power consumption.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2011年第11期1003-1008,共6页
Journal of Tianjin University(Science and Technology)
关键词
卧式搅拌设备
功率特性
动网格
VOF模型
horizontal stirring device
power performance
dynamic mesh
VOF model
