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散式流态化呈现出一种非常均匀的理想流态化结构 .聚式流态化具有明显的两相结构 .当流型从散式到聚式转变时 ,床层结构发生了变化 .本文在提出用最小二乘法同时计算关联维D2 和K2 熵的计算方法的基础上 ,就A类颗粒在不同气速下的压力波动 ,分析了从散式到聚式转变时所对应的床层结构的变化 ,解释了在不同尺度下两种流型所表现出的不同动力学行为 .以此为基础 ,提出了新的识别流型转变的方法 .
Dispersive fluidization shows a very homogeneous and ideal fluidized structure. Polymeric fluidization has a distinct two-phase structure, and the bed structure changes as the flow pattern changes from scattered to convergent. Based on the calculation method of simultaneous calculation of the entropy of correlation dimension D2 and K2 by the least square method and the pressure fluctuation of A type particles at different gas velocities, the corresponding bed structure , And explains the different dynamic behaviors of the two flow regimes at different scales.On the basis of this, a new method of identifying the transition of flow regime is proposed.