采用离散元方法，对喷动流化床内的颗粒混合特性进行了三维直接数值模拟。
Numerical simulations on particle mixing characteristics of spout-fluid bed were carried out in three dimensional based on discrete element method (DEM).
本文对导向喷动流化床中固体颗粒的破损进行了理论分析和实验测试。
Theoretical analysis and experimental works have been carried out to study the solid particle attrition phenomena in a spouted-fluidized bed with a draft tube.
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.
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