【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.更多还原

【Abstract】 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.更多还原