%0 Journal Article
%T Statistical and Frequency Analysis of Pressure Fluctuations in Liquid-Solid Exterior Circulating Fluidized Bed<br>液固两相外循环流化床压力波动信号的统计及频谱分析
%A ZHANG Shao-feng
%A WANG Qi
%A GAO Chuan-bo
%A LIU Yan
%A <br>张少峰
%A 王琦
%A 高川博
%A 刘燕
%J 过程工程学报
%D 2006
%I 
%X The pressure fluctuation is important information that can be used to indicate the dynamic characteristics of the fluidized bed. In order to find out the flow characteristics of the liquid-solid exterior circulating fluidized bed, the time-domain analysis, frequency-domain analysis and correlation analysis were carried out with the wall pressure fluctuations in the liquid-solid exterior circulating fluidized bed. it was found that the pressure fluctuations at different positions were the same in the steady fluidization segment, the power distribution frequency ranges generated by the liquid flow and the motion of the particles concentrated in 0-10 Hz and 30-40 Hz. The probability density function was close to the normal distribution, and the pressure fluctuations signal existed between the periodic and random signals.
%K liquid-solid exterior circulating fluidized bed
%K pressure fluctuation
%K power spectral density
%K time-domain analysis
%K autocorrelation analysis<br>液固外循环流化床
%K 压力波动
%K 功率谱密度
%K 时域分析
%K 自相关分析
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=DD4B670E1CF2CE87&yid=37904DC365DD7266&vid=B31275AF3241DB2D&iid=B31275AF3241DB2D&sid=2D207DE75533FA7E&eid=899CC9158FC43EF4&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=1&reference_num=12