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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
INFLUENCE OF PORE GEOMETRY ASSUMPTIONS OVER THE PLUG-SCALE PERMEABILITY
Submission Author:
Vinicius Gonçalves dos Santos , RJ
Co-Authors:
Vinicius Gonçalves dos Santos, Allan Barbosa Geoffroy Motta, Vitor Ventura
Presenter: Vinicius Gonçalves dos Santos
doi://10.26678/ABCM.ENCIT2020.CIT20-0295
Abstract
Based on the Continuum Mixture Theory, this work aims to propose a modeling technique to improve the source interaction term between constituents in a mixture of a porous matrix saturated by an incompressible generalized Newtonian fluid. A set of numerical simulations are performed in the pore scale to analyze the dimensionless force behavior for Newtonian and Power-Law fluids, considering many pore geometry idealizations. A wide set of Reynolds number is covered. The results are presented comparing the geometry degree of extension, the fluid model and the pore radius influence. The numerical interaction term is applied for cylindrical pores in plug scale simulations and the permeability field obtained by our assumptions is compared with the permeability obtained analytically. The results are also compared for convergent-divergent pore geometries with the classical cylindrical hypothesis. As the flow rate is kept constant, a significant increase in pressure drop in the plug is noticed when the pores are idealized with a convergent- divergent assumption.
Keywords
Porous media, Power-law fluids, Mixture Theory, pore-scale, plug-scale
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