中文摘要：

为在传播的煤气固体的流动的一个三维的模型使流体化床(CFB ) 起床人基于计算粒子液体动力学(CPFD ) 被开发。模型被用来使流体化的床起床人在二使液化在各种各样的表面的煤气的速度和固体团流动操作在传播内模仿煤气固体的流动行为政体， dilute 阶段运输(DPT ) 政体和快使液化(FF ) 政体。模拟结果与固体速度和劫盗的试验性的数据基于比较被评估，从非侵略的自动化放射性的粒子追踪和 gamma 光线断层摄影术技术获得了分别地。有试验性的数据的预言的固体速度和劫盗的协议为 CFB 起床人验证了 CPFD 模型。模型在二政体预言了煤气固体的流动的主要特征；制服冲淡在 DPT 政体的阶段，和 dilute 的共存在 FF 政体在更低的区域在上面的区域和稠密的阶段分阶段执行。聚类并且固体背在 FF 政体混合是比在 DPT 政体的那些强壮的。

英文摘要：

A three-dimensional model for gas-solid flow in a circulating fluidized bed（CFB） riser was developed based on computational particle fluid dynamics（CPFD）.The model was used to simulate the gas-solid flow behavior inside a circulating fluidized bed riser operating at various superficial gas velocities and solids mass fluxes in two fluidization regimes,a dilute phase transport（DPT） regime and a fast fluidization（FF） regime.The simulation results were evaluated based on comparison with experimental data of solids velocity and holdup,obtained from non-invasive automated radioactive particle tracking and gamma-ray tomography techniques,respectively.The agreement of the predicted solids velocity and holdup with experimental data validated the CPFD model for the CFB riser.The model predicted the main features of the gas-solid flows in the two regimes;the uniform dilute phase in the DPT regime,and the coexistence of the dilute phase in the upper region and the dense phase in the lower region in the FF regime.The clustering and solids back mixing in the FF regime were stronger than those in the DPT regime.