Effects of capillary heterogeneity on vapor-liquid counterflow in porous media
TLDR
In this article, the effect of capillary heterogeneity, induced by variation in permeability, on the steady state, countercurrent, vapor-liquid flow in porous media is analyzed and it is shown that the heterogeneity acts as a body force, that may enhance or diminish gravity effects on heat pipes.About:
This article is published in International Journal of Heat and Mass Transfer.The article was published on 1993-03-01 and is currently open access. It has received 17 citations till now. The article focuses on the topics: Capillary action & Heat pipe.read more
Citations
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Book ChapterDOI
Multiphase Flow and Heat Transfer in Porous Media
Chao Yang Wang,Ping Cheng +1 more
TL;DR: The chapter concludes that the studies of heat transfer in multicomponent porous media systems are only at the initial stage, and very extensive research is needed in this technologically important and fundamentally intricate subfield ofHeat transfer.
Journal ArticleDOI
Modeling two-phase flow in PEM fuel cell channels
TL;DR: In this paper, a continuum model of two-phase channel flow based on Darcy's law and the M 2 formalism is developed to estimate the parameters key to fuel cell operation such as overall pressure drop and liquid saturation profiles along the axial flow direction.
Journal ArticleDOI
Modeling two-phase flow in three-dimensional complex flow-fields of proton exchange membrane fuel cells
TL;DR: In this paper, a two-phase flow model of 3D complex flow-fields of PEMFCs is developed by accounting for Forchheimer's inertial effect, for the first time, to elucidate the underlying mechanism of liquid water behavior and mass transport inside 3D-complex flow-field and their adjacent gas diffusion layers.
Journal ArticleDOI
Capillary effects in drainage in heterogeneous porous media: continuum modelling, experiments and pore network simulations
TL;DR: In this article, the authors investigated the effects of capillary heterogeneity induced by variations in permeability in the direction of displacement in heterogeneous porous media under drainage conditions, and found that heterogeneity affects significantly the saturation profiles, the effect being stronger at lower rates.
Journal ArticleDOI
A pore-network study of bubble growth in porous media driven by heat transfer
C. Satik,Y. C. Yortsos +1 more
TL;DR: In this article, a boundary in the parameter space was delineated that separates patterns of growth dictated solely by capillarity (invasion percolation) from other patterns, and the region of validity of invasion percolations was found to decrease as the supersaturation (heat flux), the capillary number, the thermal diffusivity and the vapor cluster size increase.
References
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Journal ArticleDOI
Heat transfer in porous media considering phase change and capillarity—the heat pipe effect
TL;DR: In this paper, a steady state analysis of the heat and mass transfer in porous media saturated with the liquid and vapor phases of a single component fluid was conducted, and the effects of capillarity, gravity forces, and phase change were included.
Proceedings ArticleDOI
Fractal Distributions of Reservoir Heterogeneity and Their Influence on Fluid Transport
Journal ArticleDOI
The fractal nature of a diffusion front and the relation to percolation
TL;DR: In this paper, a two dimensional simulation of a diffusion front is shown to have a fractal geometry in a range increasing with the diffusion length, where the number of particles on the front, and the width measuring its spread, follow power laws as a function of diffusion length.
Journal ArticleDOI
Gravitational stability of water over steam in vapor‐dominated geothermal systems
Gerald Schubert,Joe M. Straus +1 more
TL;DR: In this article, it was shown that a heavy fluid phase overlying a light phase of the same fluid in a porous medium can be stable provided the permeability in the vicinity of the interface is not too large.
Journal ArticleDOI
Capillary effects in steady-state flow in heterogeneous cores
Yanis C. Yortsos,Jincai Chang +1 more
TL;DR: In this paper, the saturation response to various forms of heterogeneity is investigated for one-dimensional, steady-state flow, and the sensitivity to process parameters, such as rate, heterogeneity length scale and correlation, is studied.