摘要
1 INTRODUCTIONJetting fluidized beds have been widely applied in suchprocesses as catalytic and flame reactions,combustionand gasification of coal,treatment of waste,cleaningof dusty gases,coating and granulation.The flowcharacteristics of jetting fluidized beds are relevant tothe stable gas jet and the high rates of heat
The pressure fluctuation in a large jetting fluidized bed with a vertical nozzle was examined based on deterministic chaos theory. The effects of the jetting gas velocity and the static bed height on the correlation dimension were investigated. The correlation dimension increased with increasing jet gas velocity. At the same jet gas velocity, the higher the static bed height, the greater the correlation dimension is. The variations of correlation dimension and standard deviation of pressure fluctuation with gas jet velocity exhibited a similar shape and trend.
基金
Supported by the National Natural Science Foundation of China(No.29476262)
