FLUID-PARTICLE INTERACTIONS AND FLOW CHARACTERISTICS OF FLUIDIZED BEDS AND SETTLING SUSPENSIONS OF SPHERICAL PARTICLES
FLUID-PARTICLE INTERACTIONS AND FLOW CHARACTERISTICS OF FLUIDIZED BEDS AND SETTLING SUSPENSIONS OF SPHERICAL PARTICLES
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DOI：
10.1080/00986448908940189
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发表时间：
1989-04
影响因子：
2.5
通讯作者：
A. Khan;J. F. Richardson
中科院分区：
文献类型：
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作者：
A. Khan;J. F. Richardson
将已发表的均匀球形颗粒在固液体系中流态化和沉降过程中观察到的速度-空隙关系的关联式与已发表的实验结果进行了比较。结果表明，在伽利略数(10−2<；Ga<；1010)和空泡率(0·4<；ϵ<；1)的较大范围内，Richardson和Zaki提出的表达式很好地代表了实验数据。给出了作为系统性质(包括墙效应)的函数来预测表达式中的常数的方法。
Abstract The published correlations for the velocity-voidage relationship observed during fluidization and sedimentation of uniformly sized spherical particles in solid-liquid systems are compared with published experimental results. It is found that the expression suggested by Richardson and Zaki represents the experimental data well over a wide range of values of Galileo number (10−2 < Ga< 1010) and voidage (0·4 < ϵ < 1). Methods are given for predicting the constants in the expression as a function of the properties of the system, including wall effects.