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Spouting Behaviors of Binary Mixtures of Cylindroid and Spherical Particles

机译：圆柱形和球形颗粒二元混合物的喷动特性

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Spouting behaviors of cylindroid and spherical particles in a spouted bed are experimentally investigated. The characteristics of flow pattern and pressure drop of the binary mixtures are figured out and three kinds of cylindroid particles with different sizes and shapes are involved in experiments to discuss effects of particle size and shape on the spouting behaviors in beds. The emphasis is laid on the influence of the volume fraction of cylindroid particles, X-c, on the spouting phenomena, including the total pressure drop, the minimum spouting velocity, and fountain height. Results show that, the shapes and sizes of cylindroid particles, mainly including equivolume diameter and aspect ratio, significantly affect the spouting behaviors. There is a maximum volume fraction, X-c,X-max, for each kind of cylinders to maintain the stable fountain at a certain gas velocity. With the same gas velocity, X-c,X-max is lower for the cylinders with higher aspect ratio. (c) 2014 American Institute of Chemical Engineers AIChE J, 61: 58-67, 2015
机译：实验研究了圆柱状和球形颗粒在喷射床中的喷射行为。弄清了二元混合物的流型和压降特性，并通过实验研究了三种不同大小和形状的圆柱状颗粒，探讨了颗粒大小和形状对床内喷射特性的影响。重点放在圆柱状颗粒X-c的体积分数对喷射现象的影响上，包括总压降，最小喷射速度和喷泉高度。结果表明，圆柱状颗粒的形状和大小（主要包括等体积直径和长宽比）显着影响喷射行为。每种气瓶都有一个最大的体积分数X-c，X-max，以在一定的气体速度下保持稳定的喷泉。在相同的气体速度下，纵横比较高的气缸的X-c，X-max较低。 （c）2014美国化学工程师学会AIChE J，61：58-67，2015

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