微观-介观双尺度模型下循环流化床内宏观流动  

Macro-scale flow behavior of gas and particles in the circulating fluidized bed with micro-scale and meso-scale two scales model

作　　者：孙巧群 陆慧林[1] 刘文铁[1] 沈志恒[1] 李响[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《哈尔滨工业大学学报》2007年第1期114-118,共5页Journal of Harbin Institute of Technology

基　　金：国家自然科学基金资助项目(50376013)

摘　　要：基于气体分子运动论和颗粒动理学,建立微观-介观尺度双尺度的稠密气固两相流流动模型.微观尺度考虑气体与单颗粒以及单颗粒间相互作用造成的能量和动量传递和耗散,介尺度考虑气体与颗粒团聚物以及团聚物间相互作用形成的能量和动量传递和耗散,同时考虑微观尺度与介观尺度间相互作用导致动量和能量的传递.模拟计算颗粒相浓度、速度等参数与实测值相吻合.A micro-scale and meso-scale two scales model was presented based on the theory of molecular dynamics and kinetic theory of granular flow. The interaction and energy dissipation between gas phase and dispersed particles, and by particle collisions were considered in the micro-scale. The interaction and energy dissipation between gas phase and particle clusters, and clusters collsions were taken into account by meso-scale. The interaction between micro-scale and meso-scale was also considered. Flow behavior of gas and particle phases was investigated in the circulating fluidized beds. The predicted results were in agreement with experiments data.

关 键 词：颗粒团聚物流动 微观-介观双尺度模型 气固两相宏观流动 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]