Abstract： Using fluid catalytic cracking catalysts as the solid particle materials, the pressure in downstream process of the particles in the inclined tube was measured by dynamic pressure transducers in an inclined tube experiment installation with the inner diameter of 150 mm, length of 3 400 mm and obliquity of 45°. The evolution of granular flow patterns in the inclined tube was studied. The results show that with the increase of mass flow rate of the downstream particles, flow patterns of the granular flow in the inclined tube are Type I stratified creeping flow, Type II stratified creeping flow, transition stratified flow, stratified flow and fluidized flow. The flow patterns of granular flow downstream in the inclined tube can be identified by the dynamic pressure.

Keywords: inclined tube; granular flow; creeping flow; stratified flow

中图分类号：O35         文献标志码：A

文章编号：1008-5548(2015)03-0012-04

DOI:10.13732/j.issn.1008-5548.2015.03.003

收稿日期：2014-10-05， 修回日期：2014-10-30，在线出版时间：2015-06-24。

基金项目：国家自然科学基金项目，编号：21176250；中国石油大学（北京）基本科研基金项目，编号：KYJJ2012-03-13。

第一作者简介：邓佑鲜（1989—），男，硕士研究生，研究方向为气-固两相流及颗粒物质。 电话：010-89733909，E-mail:654655597@qq.com。