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Title: Wavelet analysis to characterize cluster dynamics in a circulating fluidized bed

Abstract

A common hydrodynamic feature in heavily loaded circulating fluidized beds is the presence of clusters. The continuous formation and destruction of clusters strongly influences particle hold-up, pressure drop, heat transfer at the wall, and mixing. In this paper fiber optic data is analyzed using discrete wavelet analysis to characterize the dynamic behavior of clusters. Five radial positions at three different axial locations under five different operating conditions spanning three different flow regimes were analyzed using discrete wavelets. Results are summarized with respect to cluster size and frequency.

Authors:
;
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV
Sponsoring Org.:
USDOE - Office of Fossil Energy (FE)
OSTI Identifier:
913404
Report Number(s):
DOE/NETL-IR-2007-129
Journal ID: ISSN 0032-5910; TRN: US200802%%646
DOE Contract Number:
None cited
Resource Type:
Journal Article
Resource Relation:
Journal Name: Powder Technology; Journal Volume: 173; Journal Issue: 3
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 01 COAL, LIGNITE, AND PEAT; CIRCULATING SYSTEMS; FLUIDIZED BEDS; HEAT TRANSFER; HYDRODYNAMICS; PRESSURE DROP; AGGLOMERATION; DATA ANALYSIS; DYNAMICS; Clusters; Wavelets; Multiphase flow; CFB

Citation Formats

Guenther, C., and Breault, R.W. Wavelet analysis to characterize cluster dynamics in a circulating fluidized bed. United States: N. p., 2007. Web. doi:10.1016/j.powtec.2006.12.016.
Guenther, C., & Breault, R.W. Wavelet analysis to characterize cluster dynamics in a circulating fluidized bed. United States. doi:10.1016/j.powtec.2006.12.016.
Guenther, C., and Breault, R.W. Mon . "Wavelet analysis to characterize cluster dynamics in a circulating fluidized bed". United States. doi:10.1016/j.powtec.2006.12.016.
@article{osti_913404,
title = {Wavelet analysis to characterize cluster dynamics in a circulating fluidized bed},
author = {Guenther, C. and Breault, R.W.},
abstractNote = {A common hydrodynamic feature in heavily loaded circulating fluidized beds is the presence of clusters. The continuous formation and destruction of clusters strongly influences particle hold-up, pressure drop, heat transfer at the wall, and mixing. In this paper fiber optic data is analyzed using discrete wavelet analysis to characterize the dynamic behavior of clusters. Five radial positions at three different axial locations under five different operating conditions spanning three different flow regimes were analyzed using discrete wavelets. Results are summarized with respect to cluster size and frequency.},
doi = {10.1016/j.powtec.2006.12.016},
journal = {Powder Technology},
number = 3,
volume = 173,
place = {United States},
year = {Mon Apr 30 00:00:00 EDT 2007},
month = {Mon Apr 30 00:00:00 EDT 2007}
}