ANGULAR POROSITY DISTRIBUTIONS IN FIXED PACKED-BEDS OF LOW DIAMETER ASPECT RATIO

The angular porosity distribution for fixed packed beds of monosized s pheres in cylindrical containers with low diameter aspect ratios (1 le ss than or equal to D/d less than or equal to 2) is determined from th e spheres' center coordinates. By dividing the packed bed into a large number of identical wedge-shaped segments, the angular porosity distr ibution is established from the local angular porosity and the angular positions within the cylindrical container. A correlation which accur ately predicts the local angular porosity is determined from the angul ar porosity distributions. The correlation is a function of D/d and th e angular position in the cylindrical container.