作　　者： ; ; (王印泽）;

机构地区： 江南大学食品学院食品装备技术研究中心

出　　处： 《现代制造工程》 2008年第8期71-76,共6页

摘　　要： 为认知超微粉碎机粉碎腔内的流场结构和流动状态,采用离散相模型对粉碎机粉碎腔内的气/固两相三维定常流场进行了数值模拟。气相采用重整化群k-ε双方程模型,颗粒相采用随机颗粒轨道模型,同时综合考虑了颗粒受力和湍流扩散对流场状态的影响。模拟结果直观显示了粉碎腔内的速度、总压和流线等特征,研究结果对进行超微粉碎设备关键结构优化设计提供了一定的理论指导。 A numerical investigation of the gas-solid two-phase flow in a superfine pulverizer is presented to investigate the flow filed frame and the flow state in the comminuting cavity. The gas phase was expressed with the renormalization group k-ε two-equation model, and the particle phase was expressed with the particle stochastic trajectory model. Further more, force analysis of solid particle and gas turbulent dispersion are included. Based on data from this study, the velocity-field, pressure-field and path line of the comminuting cavity are presented directly. The conclusions in this investigation give constructive information to the designing of relative parts in comminuting equipment.

关 键 词： 超微粉碎 气 固两相流 颗粒轨道模型 数值模拟

领　　域： [轻工技术与工程]