Abstract
A hyperbolic character of the convective part of the flow of an air–helium mixture through a granulated sorbent layer with allowance for the Forchheimer filtration is demonstrated. A numerical model of a one-dimensional flow of the air–helium mixture through an adsorber filled by a granulated sorbent with due allowance for air and helium diffusion inward cylindrical granules and helium confinement in microspheres is developed. Within the framework of this model, verification of a numerical algorithm in problems of gas filtration through a porous medium and propagation of a pressure wave formed by the incident shock wave over a gas medium is performed. Experimental and numerical data are obtained and are found to be in good agreement. The enrichment phase is modeled by the method of pressure swing adsorption with the use of a bifunctional sorbent based on microspheres. It is demonstrated that the mass fraction of helium in the air–helium mixture can be almost doubled (from 0.7 to 1.3%) with the helium extraction degree of 90.4%.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2021, Vol. 63, No. 5, pp. 3-19. https://doi.org/10.15372/PMTF20220501.
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Vereshchagin, A.S., Kazanin, I.V., Zinovyev, V.N. et al. NUMERICAL SIMULATION OF ENRICHMENT OF THE AIR–HELIUM MIXTURE WITH A BIFUNCTIONAL SORBENT BASED ON GLASS MICROSPHERES. J Appl Mech Tech Phy 63, 731–745 (2022). https://doi.org/10.1134/S0021894422050017
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DOI: https://doi.org/10.1134/S0021894422050017