多尺度熵在棒束通道气液两相流压差信号分析中的应用OA北大核心CSCDCSTPCD
Application of multi-scale entropy in analyzing pressure difference signals of gas-liquid two-phase flow in rod bundled channel
棒束通道气液两相流的压差信号是非线性的，多尺度熵法在分析非线性信号方面效果较好。运用多尺度熵对压差信号进行分析，在7×7棒束通道的气液两相流实验台上采集压差信号，针对104种流动条件4种流型的压差时间序列分析其多尺度熵特征。研究发现：小尺度（前8个）下的多尺度熵率可以准确区分棒束通道4种流型；大尺度下的样本熵变化趋势可以揭示4种流型的动力学特性。
Due to non-linearity of pressure difference signals of gas-liquid two-phase flow in rod bundled channel and capability of multi-scale entropy analysis in charactering complex signals, multi-scale entropy analysis was used to study time series of pressure difference signals of gas-liquid two-phase flow in the 7×7 rod bundled channel under 104 different flow conditions. Results showed that the change rate of multi-scale entropy in small scales (no more than 8)…查看全部>>
周云龙;尹洪梅;丁会晓
东北电力大学能源与动力工程学院，吉林省吉林市 132012东北电力大学能源与动力工程学院，吉林省吉林市 132012东北电力大学能源与动力工程学院，吉林省吉林市 132012
能源科技
气液两相流多尺度样本熵流型识别棒束通道算法
gas-liquid two-phase flowmulti-scalesample entropyflow pattern recognitionrod bundlealgorithm
《化工学报》 2016 (9)
3625-3632,8
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