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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vol. 391Heat Exchange in Unsaturated Porous Media with...

Heat Exchange in Unsaturated Porous Media with Heat Dependent Water Flow

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Abstract:

We discuss the heat and mass transport in unsaturated-saturated porous mediaincluding heat exchange between inltrated water and matrix. We include the thermal inuenceon hydraulic permeability and on the water expansion which changes the water saturation.This consequently inuences the hydraulic permeability.Numerical modelling includes the direct and inverse solution of the problem, where model parametersare determined. Numerical experiments require only simple input/output measurementsof suitable ow characteristics in laboratory conditions with 3D cylindrical samples.The ow model is based on Richard's strongly non-linear parabolic equation based on empiricalvan Genuchten's capillary-pressure model. The transport includes longitudinal and transversaldispersion.

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Periodical:

Defect and Diffusion Forum (Volume 391)

Pages:

1-10

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.391.1

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Online since:

February 2019

Authors:

Jozef Kačur, Patrik Mihala

Keywords:

Heat Energy Exchange, Heat Transport, Numerical Modelling, Porous Media, Water Expansion, Water Transport, Water Viscosity

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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