摘要
研究了节涌流化床多自由度随机波动模型参数,提出了确定气栓和料栓长度的试差迭代法、床层底部的“白噪声”扰动函数和床层表面的正态扰动函数.模型模拟计算的结果对于节涌流化床波动结构的动力学特征、压力波动的频谱特征和波动的传播与衰减等与实验结果取得了较好的吻合.
In this paper the parameters of the random model of multivariant vibration for, slugging bed are investigated. A trial-and-error method is proposed to determine the length of gas slugs and particle slugs in the bed. A 'white noise' disturbing function is designated for bottom disturbing forces of the bed, and a normal disturbing function for surface disturbing forces. Model simulations demonstrate a good coincidence with experimental results in expressing dynamic characteristics of vibration structures, frequency spectrum of pressure fluctuations and propagation and attenuation of fluctuations in the bed.
出处
《化工学报》
EI
CAS
CSCD
北大核心
1993年第4期426-432,共7页
CIESC Journal
关键词
流态化
节涌床
压力波动
功率谱
fluidization, slugging bed, pressure fluctuation, power spectrum
