Abstract: Intermediate state fluidization is represented by a fuzzy set. One parameter, heterogeneity, deduced from statistical characteristics of fluidization voidage spectrum and εmf,is defined as the membership function of the fuzzy set. Interpretation by fuzzy sets of gas- solid and liquid -solid fluidization experiments under various pressures,fluid viscosities and particle properties, illustrates that the configuration of two - phase structure in fluidized bed varies with operating parameters as well as material properties. By means of fuzzy sets,the heterogeneity,or the grade of aggregative,of a certain fluidization state can be referred to as a specific number ranging from 0 to 1.

摘要： 用模糊集合描述流化床的状态,从流化床空隙率脉动谱归纳出其不均匀度作为模糊集合的隶属函数.流化床在任何状态下的不均匀度或聚式化度都可用0～l之间的1个数值表示.对液固流态化和气固流态化实验进行观测和描述说明,模糊数学方法能够反映流化床两相结构的存在、漂移和转化,也能体现密度、粘度、粒度和表面性质的因素对流态化状态的影响.