流化床内壁温度时间序列吸引子的研究

Study on the Attractore of the Temperature Time Seriesfrom the inner Wall of Fluidized Bed

本文应用近年发展起来的混地理论对流化床内壁温度时间序列所构成的吸引子进行了研究。对长期以来流化床传热研究中所存在的不同研究者所得出的关联式一致性差、在关联式外推时往往与实际产生严重偏差的问题进行了探讨分析．首次发现了具有相同平均传热系数的时间序列可具有完全不同的吸引子，从而指出了以往仅以平均传热系数值的大小为原则去寻求不同尺寸设备和不同运行条件下流化床相同传热动力特性的不可靠性，并在混沌理论的基础上提出了新的观点及理论依据。

The investisation prasented in this paper is on the attractors constructed by the tempera-ture time series from the inner wall of fluidized bed by use of the newly develoed chaos theory. Spe-cial disciissioiis are made abeut the per identification of the heat transfer in fluidizeil beds. It is discov-ered for the first time that the tune series which have sanie average ceefficients of heat transfer mayhave totally different attractors. So that it is pointed out that it is unreliable to seek the same dynami-cal behavior of heat transfer in different size facilities and different oporating conditions according tothe value ofaverage coefficients ofheat transfer only. New views and theoretic basis are advanced fromchaos theory.