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利用瞬态热流计及桥式电路检测技术在电加热圆管上对气固两相流传热过程中的瞬态传热特性进行了试验研究，在此基础上利用混沌理论对气固两相流传热的内在规律进行了分析和探讨，并进一步引入Ｋ熵的概念对气固两相流传热系统的混沌程度进行了定量分析。结果表明，传热信号频率主要在１０Ｈｚ以下，具有宽带频谱特性；固体颗粒浓度增加将使频带范围大、Ｋ熵提高、关联维数增大、系统混沌程度提高，并且传热系数也随关联维数、Ｋ熵及系统混沌程度的增加而增加；固体颗粒浓度增加还将使传热系数脉动幅度和频率提高。计算表明关联维数在０．８～２．５之间。
The transient heat transfer characteristics of gas-solid two-phase flow in electric heating tube were investigated by using transient heat flowmeter and bridge circuit detection technology. Based on this, the chaos theory was applied to the gas-solid two-phase flow The inherent law of heat is analyzed and discussed. The concept of K entropy is further introduced to quantitatively analyze the chaos of gas-solid two-phase flow heat transfer system. The results show that the frequency of heat transfer signal is mainly below 10Hz, which has wide band spectral characteristics. The increase of solid particle concentration will increase the range of frequency band, increase K entropy, increase the correlation dimension and increase the chaos of the system. Number, entropy of K and the degree of system chaos increase; the increase of solid particle concentration will also make the fluctuation amplitude and frequency of heat transfer coefficient increase. The calculation shows that the correlation dimension is between 0.8 and 2.5.