本文通过采用实验和数值模拟的方法，研究了喷动流化床内气体混合特性以及床内气固两相的流动特性。
The dissertation studies the characteristics of gas mixing and the gas-solid two phases flow in spouted-fluidization bed with experiment and numerical simulation methods.
用此模型对循环流化床的两相流动进行数值模拟，得到了较详细的床内流动特性。
These models are used to numerically study the two-phase flow in a Circulating Fluidized Bed (CFB), and detailed results regarding the dense two-phase flow characteristic in a CFB are obtained.
通过对床中物体表面与碰撞颗粒流之间的动量衡算，将颗粒流动量通量与颗粒的碰撞压力相关联，建立了流化床中颗粒碰撞压力的理论模型。
Relating the momentum flux of particle with the particle impact pressure on objects, a theoretical model of the particle impact pressure in fluidized bed is developed.
模拟结果表明，在L型定向风帽流化床中，颗粒存在顺时针方向的循环流动，因此床料的横向混合特性较好。
The simulation result indicates that there is clockwise particles circulation in fluidized beds with L-type wind caps.
气态反应混合物从形成流化床的非均相颗粒催化剂的底部流动到其顶部，其中流化床中排列有隔板。
A gaseous reaction mixture flows from the bottom to the top of a heterogeneous particulate catalyst that forms a fluidized bed in which baffles are arranged.
测量了床内颗粒速度分布，考察了操作条件、体系结构等因素对流化床流动特性的影响。
Particle velocity distribution in the bed was measured to investigate the influence of manufacturing conditions and structure of the bed.
气-固两相流是由气体相和固体相所组成的流动系统，如气-固流化床、气-固循环流化床、气力输送等。
Gas-solid two-phase flow is a flow system forms by the gas phase and solid phase, such as Gas-solid Fluidized Bed, Gas-solid Circulating Fluidized Bed and Pneumatic transmission system etc.
气-固两相流是由气体相和固体相所组成的流动系统，如气-固流化床、气-固循环流化床、气力输送等。
Gas-solid two-phase flow is a flow system forms by the gas phase and solid phase, such as Gas-solid Fluidized Bed, Gas-solid Circulating Fluidized Bed and Pneumatic transmission system etc.
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