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ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Power-law Fluid Flow Behavior on Porous Media Interface
Submission Author:
Cirilo Seppi Bresolin , RS
Co-Authors:
Cirilo Seppi Bresolin, Guilherme Henrique Fiorot, Roberta Minussi
Presenter: Roberta Minussi
doi://10.26678/ABCM.ENCIT2022.CIT22-0612
Abstract
Non-Newtonian fluid flows conjugated with porous media occur in many industrial and natural processes. How the fluid rheological and porous material characteristics affect the flow still needs more understating. In this manuscript, a power-law fluid flow in a channel half filled with a porous matrix is simulated using the Lattice Boltzmann Method. Is observed how the fluid index and pore diameter influence the Darcian velocity, the fluid strain-rate at the interface, and the gain of discharge. The results show that immediately after the porous interface there is a momentum gain of a hundredfold. The hydraulic resistance is greater for a fluid index smaller than 1.0. The conditions at the interface are function from the pore diameter, and the discharge gain is greater for shear-thinning fluids for the same Darcian flow.
Keywords
Non Newtonian Fluids, Power-Law, Lattice Boltzmann
