Abstract
The hydrodynamic conditions resulting from the permeability of porous materials are based not only on the assessment of the gas flow through these materials, but also the losses related to the pressure energy in this flow. Flow resistance is a direct measure of this loss. The aim of this experimental research was to evaluate the flow resistance of the porous material in relation to the gas flow. The research was carried out on a material with a slit-porous structure. The tests were carried out on a system for measuring gas permeability under the conditions of gas bubbling through the char. The issue of the total pressure drop process in the porous bed was considered in the Reynolds number category. The coefficient of flow resistance for the char was determined and the value of this coefficient was compared with the gas stream, and an experimental evaluation of the total pressure drop on the porous bed was made. The novelty of this article is the determination of the tortuosity and the gas permeability coefficient for a solid of any shape—a rigid skeleton.
Highlights
Under natural conditions, the flow of fluids in porous structures is connected with the movement of gases and liquids in geological deposits [1]
The results show a decrease in changes to the value of the resistance coefficient as a result an increase the Reynolds number, which with thecoefficient physics ofasthe
Hydrodynamic investigations were carried out which concerned gas bubbling conditions through char deposit
Summary
The flow of fluids in porous structures is connected with the movement of gases and liquids in geological deposits [1]. These deposits, as primary reservoirs, are areas of migration [2,3,4,5,6,7,8,9,10,11,12,13,14,15] of such substances as crude oil or natural gas, and of the movement of other liquids and gases, such as water brine or methane in rock masses of hard coal In each of these cases, recognizing conditions of the flow of gasses by porous deposits can, to a considerable degree, contribute to better understanding mechanisms of the flow and the migration of gasses in the given rock deposit, which can correlate with more effectively getting gas out of natural geological deposits. Modifications to the Darcy–Weisbach [22,23]
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