摘要
采用床层塌落技术研究了并流向上三相流化床的流体力学行为,实验测得尾涡模型中的两个重要参数k、x;并与采用传统压差法测得的各相相含率以及利用参数k、x通过尾涡模型预测的各相相含率进行对比时,发现两者吻合良好,证明采用床层塌落技术的研究是成功的.
The hydrodynamic behavior of a cocurent gas-liquid-solid fluidized bed was studied by the bed collapse technique, and the key parameters, k and x, of the generalized wake model were estimated.
Compared with other existing methods for evaluating the parameters, k and x, the bed collapse technique shows some distinct advantages. The parameters are derived directly from experiments in a three-dimensional three-phase fluidized bed. There is no need to assume a complete sphere for a bubble and its wake. The holdup results of the three-phase fluidized bed predicted by the generalized wake model with the estimated k and x are in good agreement with those obtained with the traditional pressure-drop method.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1992年第1期33-39,共7页
CIESC Journal
基金
国家自然科学基金
