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Journal of Porous Media
インパクトファクター: 1.49 5年インパクトファクター: 1.159 SJR: 0.43 SNIP: 0.671 CiteScore™: 1.58

ISSN 印刷: 1091-028X
ISSN オンライン: 1934-0508

巻:
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Journal of Porous Media

DOI: 10.1615/JPorMedia.v8.i3.50
pages 299-310

Modeling the Loading Stage Coalescence Process in Fibrous Media

G. Vasudevan
Microscale Physiochemical Engineering Center, University of Akron, Akron, OH 44325-3904
S. I. Hariharan
Department of Mathematical Sciences, The University of Akron, Akron, Ohio, U.S.A.; and ICOMP, NASA Lewis Research Center, Cleveland, Ohio, U.S.A.
G. G. Chase
Department of Chemical Engineering, Microscale Physiochemical Engineering Center, The University of Akron, Akron, Ohio 44325-3906

要約

Coalescence filtration is a complex multiphase flow process. Most of our understanding of the process is based on empirical data. A number of models have been developed to predict coalescence filtration performance. Most of these models ignore the spatial variation of the saturation in the filter medium by the droplets. In this work, the coalescence process is conceptualized to proceed through four stages: start-up, loading, unsteady coalescence, and steady coalescence. Each stage builds upon the previous stage as the liquid drops collect and accumulate in the filter medium. In this paper, solutions to the one-dimensional start-up and loading stages are presented. The resulting model is a first-order hyperbolic type of equation for air concentration. This equation is solved by modifying a predictor-corrector scheme by Hariharan and Ping (SIAM J. Sci. Stat. Comput., 10, 488-514, 1989) to include functional coefficients. The model results show that the liquid saturation varies spatially within the filter medium.


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