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Characterization of feeder effects on continuous solid mixing using fourier series analysis
Author(s) -
Gao Yijie,
Muzzio Fernando,
Ierapetritou Marianthi
Publication year - 2011
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.12348
Subject(s) - mixing (physics) , fourier series , series (stratigraphy) , residence time (fluid dynamics) , fourier analysis , fourier transform , residence time distribution , characterization (materials science) , decomposition , mathematics , biological system , analytical chemistry (journal) , materials science , statistics , mechanics , chemistry , engineering , mathematical analysis , physics , chromatography , nanotechnology , flow (mathematics) , paleontology , geotechnical engineering , quantum mechanics , biology , organic chemistry
Variance reduction ratio (VRR) is generally considered as an important index in characterizing the continuous powder mixing. Although the capacity of the mixer to smooth out feeder fluctuations can be expressed by the VRR, few studies are performed quantitatively in this area. The feeder effects are investigated on the solid mixer through the Fourier series analysis. The VRR is deduced quantitatively using the Fourier series of the feed rate variability and the residence time distribution (RTD), which facilitate the explicit decomposition of VRR into intensities of different frequency components. It provides a novel model to determine whether the integrated feeder‐mixer system satisfies specific solid mixing performance criteria, and provides guidelines of system improvement. © 2010 American Institute of Chemical Engineers AIChE J, 2011