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TECHNICAL PAPERS

Effective Dewetting in a Microporous Particle

[+] Author and Article Information
Yu Qiao1

Department of Civil Engineering,  University of Akron, Akron, OH 44325-3905yqiao@uakron.edu

Xinguo Kong

Department of Civil Engineering,  University of Akron, Akron, OH 44325-3905

1

Author for correspondence.

J. Fluids Eng 127(6), 1128-1131 (Jun 08, 2005) (4 pages) doi:10.1115/1.2060734 History: Received November 30, 2004; Revised June 08, 2005

In this paper, the kinetics of the outflow in a microporous particle infiltrated by a nonwetting liquid is analyzed in context of effective phase transformation. The “dewetting” process is considered as the nucleation, growth, and coalescence of empty pore clusters (EPCs) that starts from the interior and eventually involves the whole particle. Initially, the EPC nucleation is dominant while the influence of EPC coalescence becomes increasingly important as the EPC volume fraction increases. The dependence of the dewetting time on the pore size distribution is discussed in detail.

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Copyright © 2005 by American Society of Mechanical Engineers
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References

Figures

Grahic Jump Location
Figure 4

Evolution of the average size and the total volume fraction of EPCs

Grahic Jump Location
Figure 2

Schematic diagram of a microporous particle

Grahic Jump Location
Figure 1

Schematic diagram of the confined liquid in a nanopore

Grahic Jump Location
Figure 5

Dewetting time as a function of ṗr¯∕γ and β

Grahic Jump Location
Figure 3

Evolution of the number density of EPCs

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