喷动床内气固二相流体动力行为颗粒动理学  

Gas-solid flow simulations in spouted beds by using kinetic theory of granular flow

作　　者：何玉荣[1] 刘文铁[1] 孙巧群[1] 陆慧林[1] 

机构地区：[1]哈尔滨工业大学热能工程教研室,黑龙江哈尔滨150001

出　　处：《化学工程》2005年第4期18-21,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(50376013)

摘　　要：应用气固二相双流体模型数值模拟了喷动床内流体动力行为,模型中采用稠密固相动力-摩擦应力模型。模型中同时考虑了动理学理论和摩擦应力理论。应用贴体坐标系使得网格与喷动床的倒锥体边界符合良好。模拟得到的喷动床内颗粒速度和浓度实验数据吻合较好。A gas-solid two-fluid flow model was presented, in which the kinetic-frictional rheological model for dense assemblies of solids was incorporated in the spouted bed simulations. This model treats the kinetic and frictional stresses of particles additively. The body fitted coordination is used to make the grids best fit the outline of a conical contour of the base in the spouted bed. Calculated particle velocity and concentrations in a spouted bed are in agreement with experimental data.

关 键 词：气固二相喷动床 动力-摩擦模型 贴体坐标系 

分 类 号：TQ021[化学工程]