NDLI: An linear correlation investigation of transient tube-wall pressure signal in the static mixer with twisted leaves

Content Provider	IEEE Xplore Digital Library
Author	Meng Hui-bo Yu Yan-fang Liu Zhi-qiang Wu Jian-hua
Copyright Year	2010
Description	Author affiliation: College of Mechanical Engineering, Shenyang University of Chemical Technology , Liaoning Province, China (Meng Hui-bo; Yu Yan-fang; Liu Zhi-qiang; Wu Jian-hua)
Abstract	A investigation of delay time correlation characteristics of transient tube-wall pressure time series signals in a Kenics static mixer was undertaken based on wavelet transform multi-scales decomposition. The signal of pressure fluctuation are firstly decomposed into signals of different frequency bands including 0 ∼ 18.125Hz, 18.125 ∼ 36.25Hz, 36.25 ∼ 72.5Hz, 72.5 ∼ 125Hz, 125 ∼ 250Hz, 250 ∼ 500Hz, 500 ∼ 1000Hz and more than 1000Hz. The linear correlation characteristics of signal of different frequency bands are evaluated with auto-correlation function. The experimental results indicate that the signals of more than 1000 in frequency have no linear correlation for the time series signal. Under the lower dyadic scales ,j≪7, the detail signals especially d1 and d2 have larger fluctuation amplitudes which achieve 170∼180 Pa, but the amplitudes decrease as the dyadic scales increase. Under the higher dyadic scales ,j=8, the detail signals have smaller fluctuation amplitudes which achieve 20∼30 Pa.
File Size	1130313
File Format	PDF
ISBN	9781424463473
e-ISBN	9781424463497
DOI	10.1109/ICCET.2010.5486109
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fluctuations Temperature Hydrodynamics Educational institutions time series Mechanical engineering Dispersion Chemical technology correlation analysis Frequency Pressure measurement twisted leaves Heat transfer tube-wall pressure
Content Type	Text
Resource Type	Article

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