化工学报 ›› 2003, Vol. 54 ›› Issue (3): 305-310.

• 多相流 • 上一篇    下一篇

用波动理论确定气固磁流化床的临界稳定区

归柯庭;张辉;施明恒   

  1. 东南大学洁净煤发电及燃烧技术教育部重点实验室
  • 出版日期:2003-03-25 发布日期:2003-03-25

DEFINITION OF CRITICAL AREA OF MAGNETICALLY STABLE FLUIDIZATION WITH WAVE THEORY

GUI Keting,ZHANG Hui ; SHI Mingheng   

  • Online:2003-03-25 Published:2003-03-25

摘要: 在气固磁流化床双相模型基础上借助波动理论分析了气固磁流化床内的空隙率波动,导出了气固磁流化床的临界稳定流化区.由此确定的稳定流化范围与实验结果较好地吻合.

关键词:

流化床, 磁场, 临界稳定区, 空隙率波动

Abstract: In this paper, the critical area of magnetically stable fluidization is defined with wave theory.The definition is made in the following steps.First,the void fluctuation equation is established from two-phase model of magnetically fluidized beds(MFBs).Then,the void fluctuation in MFBs is analyzed with wave theory and the criterion of critical area of magnetically stable fluidization is derived.The critical area of magnetically stable fluidization defined in this paper matches well with the experimental results.

Key words:

流化床, 磁场, 临界稳定区, 空隙率波动