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A Unified Model for Fast Fluidization Dynamics—Continuous Transforming From Type a Choking to Type C Choking PartⅠ:Model Establishment
Author(s): 
Pages: 895-899
Year: Issue:  5
Journal: Journal of Engineering Thermophysics

Keyword:  快速流态化 噎塞速度 A型噎塞 C型噎塞 分相共存模型;
Abstract: 根据快速流化床的基本流动特性、A型噎塞和C型噎塞的特征与定义,建立了一个统一、自恰的快速床模型分相共存模型。模型以A型噎塞的修正Yang公式为‘本构方程’,合理预报了快速床的最小固体流率Gsm,以及在固体流率不变的条件下降低操作气速时床层由A型噎塞向C型噎塞的连续过渡。模型中的稀相有效气流速度函数幂次n为可调参数,根据C型噎塞速度预报的Yousfi and Gau公式,初步确定模型参数n=4。
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