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MODELLING THE FLOW OF A GAS MIXTURE THROUGH A POROUS MEDIUM, WITH ACCOUNT BEING TAKEN OF THE MODELLING SCALE

Magdalena Tutak

First published: 2018-11-20https://doi.org/10.5593/sgem2018v/1.5/s01.020View metrics

Abstract

The flow of gases through porous media is a common physical phenomenon occurring not only in the natural environment but also in a number of technical applications, including the industry. The flow of gases through rock porous media takes place during exploitation of numerous energy resources ? not only during the excavation of hard coal (the flow of a gas mixture through goaf with caving) but also in the course of exploiting crude oil and natural gas (the flow through shale rocks). The issue of gases flowing through porous media is also related to the underground sequestration of acid gases in the rock mass, including inactive headings of liquidated underground mines. During gas injection into the rock mass, gases with different physical properties, i.e. the gas being injected and the gas present in the rock mass, mix together. The mechanism responsible for this phenomenon is the physical dispersion in the porous medium. The article presents the results of numerical tests on the mixing process of gases with different physical properties in a porous medium for the flow defined by the N-S equations (the pore scale-microscale) and for flow defined by the Darcy?s model (the deposit scale-macroscale). The numerical tests conducted helped to determine the concentration distributions for the gases in the media under analysis.

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Publication details

Title
MODELLING THE FLOW OF A GAS MIXTURE THROUGH A POROUS MEDIUM, WITH ACCOUNT BEING TAKEN OF THE MODELLING SCALE
Authors
Magdalena Tutak
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th SGEM International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration And Mining
Publisher
STEF92 Technology
Year
2018
Pages
163-170
SWS Citekey
Tutak20181163170
ISSN
1314-2704
ISBN
978-619-7408-72-0
Language
en
Publication type
Conference Paper
Proceedings contents
Open official contents
Keywords
gas flowporous mediamodelling scale
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