Forced bed mass oscillations in gas–solid fluidized beds
Forced bed mass oscillations in gas–solid fluidized beds
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DOI：
10.1016/j.powtec.2004.10.004
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发表时间：
2005-01
影响因子：
5.2
通讯作者：
B. Hao;H. Bi
中科院分区：
文献类型：
--
作者：
B. Hao;H. Bi
提出了一个二阶机械振动模型来解释气固流化床中的振荡现象和压力波动。实验在内径为0.1 m的气固流化床中进行，流化床由频率为0.2 ~ 10 Hz的周期性气体脉冲驱动。实验结果表明，所提出的机械振动模型将流化床内的压力波动视为流化床对与床内气泡行为有关的外部激励力的响应结果，能够合理地解释气固流化床内的压力波动。压力波动的行为与床层系统和激振力的特性相关。
A second-order mechanical vibration model is proposed to explain the oscillation phenomena and pressure fluctuations in gas–solid fluidized beds. Experiments were conducted in a 0.1-m ID gas–solid fluidized bed driven by periodic gas pulses with the frequency varying from 0.2 to 10 Hz. Experimental results indicate that the proposed mechanical vibration model, which considers the pressure fluctuation as the results of the response of the fluidized bed to the external excitation forces related to the bubble behavior in the bed, can reasonably explain the pressure fluctuations of the gas–solid fluidized bed. The behavior of pressure fluctuations is correlated with characteristics of both the bed system and excitation forces.