Effect of liquid films on the isothermal drying of porous media

A. G. Yiotis; A. G. Boudouvis; A. K. Stubos; I. N. Tsimpanogiannis; Y. C. Yortsos

doi:10.1103/PhysRevE.68.037303

Effect of liquid films on the isothermal drying of porous media

A. G. Yiotis, A. G. Boudouvis, A. K. Stubos, I. N. Tsimpanogiannis, and Y. C. Yortsos

Phys. Rev. E 68, 037303 – Published 29 September 2003

Abstract

We study the effects of liquid films on the isothermal drying of porous media. They are important for the transport of liquid to an evaporation interface, far from the receding liquid clusters. Through a transformation, the drying problem is mapped to the Laplace equation around the percolation liquid clusters. From its solution, the properties of drying are obtained in terms of the capillary number. Consistent with experimental evidence, film flow is shown to accelerate drying significantly.

Received 23 June 2003

DOI:https://doi.org/10.1103/PhysRevE.68.037303

Authors & Affiliations

A. G. Yiotis^1,2, A. G. Boudouvis¹, A. K. Stubos², I. N. Tsimpanogiannis³, and Y. C. Yortsos^3,*

¹School of Chemical Engineering, National Technical University of Athens, Zografos 15780, Greece
²National Center for Scientific Research “Demokritos,” Aghia Paraskevi 15310, Greece
³Department of Chemical Engineering, University of Southern California, Los Angeles, California 90089-1211, USA

^*Corresponding author. Email address: yortsos@usc.edu

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Vol. 68, Iss. 3 — September 2003

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Physical Review E

covering statistical, nonlinear, biological, and soft matter physics