摘要
采用Hurst分析描述了不同喷动气速下气固喷动床中的压力波动行为 .发现压力波动信号中存在着不同程度的周期成分 .根据计算所得的Hurst系数H值随喷动气速增大而变化的曲线 ,可将颗粒床层的流动状态划分为 3个流域 :低气速时的不稳定流化、稳定喷动和高喷动气速下的不稳定喷动 .
The behavior of pressure fluctuation in a gas-solid spouted bed with different spouting gas velocity is described by means of Hurst's analysis. Periodic component is found in the pressure fluctuation signal. According to the relation of Hurst exponent to gas velocities, the gas-solid flow can be divided into three regimes: unstable fluidization at low gas velocity, stable spouting at medium velocity and unstable spouting at high gas velocity.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
2003年第2期247-252,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省科技三项基金资助项目 (K0 2 0 17)
