燃料化学学报2007，Vol.35Issue(6)：743-747,5.
加压流化床流化性质的实验与模拟研究
Experiments and simulation of fluidization properties in a pressurized jetting fluidized bed
摘要
Abstract
The behavior of particles and bubbles in a two-dimensional jetting fluidized bed included in a pressured vessel was investigated experimentally by using the CCD camera technology that can detailedly record the behavior of bubbles. Eulerian-Eulerian model was used to simulate the hydrodynamics of a pressurized jetting fluidized bed with a central jet and V-shaped distributor. The influence of gas velocity on the size of bubble, bed expansion ratio and jet penetration height at higher pressure was studied. Both experimental and simulation l results clearly indicate that the jet height decreases and the bubbles become more round when the gas-velocity of distributor is increased at higher pressure. When the jetting gas-velocity is increased, the jet height increases and the bubbles become slender. It has been verified that the result from hydrodynamic model shows a good agreement with experimental data, which suggests that the model can be used to study the fluidization properties in the pressurized fluidized bed.关键词
加压射流流化床/数值模拟/CCD照相/流态化Key words
pressurized jetting fluidized bed/numerical simulation/CCD camera/fluidization分类
化学化工引用本文复制引用
曹建涛,程中虎,房倚天,景慧敏,王洋..加压流化床流化性质的实验与模拟研究[J].燃料化学学报,2007,35(6):743-747,5.基金项目
Nation Key Project for Basic Research(2005, CB221200) （2005, CB221200）
Knowledge Innovation Program of the Chinese Academy of Science(2007 YQNRC01) （2007 YQNRC01）
