INFLUENCE OF HEATING CONDITIONS ON FORMATION AND DEVELOPMENT OF AGGLOMERATES IN A REACTIVE POROUS MEDIUM
The paper considers a numerical model of flow in a porous medium containing particles of a melting component (polymer). When heated, these particles swell, deform, and fill the pore spaces, thus resulting in a significant reduction in permeability. The simple Kozeny-Karman formula is used to describe the relationship between porosity and permeability. Then, near the lower (inlet) boundary, a region with low permeability (i.e., agglomerate) is formed, the growth of which is determined by the conditions at the sidewall and inlet boundaries. Based on the calculations, we have obtained typical scenarios of porous medium blocking at various heating temperatures. The findings indicate that when heated through the wall, the polymer may decompose, which leads to partial restoration of the porous medium permeability. When heated by the inlet gas, the agglomerate is much more stable since it blocks the heating source. © 2022 by Begell House, Inc.
Библиографическая ссылка
Donskoy I. INFLUENCE OF HEATING CONDITIONS ON FORMATION AND DEVELOPMENT OF AGGLOMERATES IN A REACTIVE POROUS MEDIUM // Heat Transfer Research. Vol.53. No.12. 2022. P.25-36. DOI: 10.1615/HEATTRANSRES.2022038756
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