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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
FLOW OF A CAPSULE SUSPENDED IN A NEWTONIAN LIQUID THROUGH A CONSTRICTED MICRO-CHANNEL
Submission Author:
Jose Roca , RJ
Co-Authors:
Jose Roca, Ivan Menezes, Marcio CARVALHO
Presenter: Jose Roca
doi://10.26678/ABCM.ENCIT2020.CIT20-0238
Abstract
Elastic capsules can be found in different applications, from red-blood cells in biological systems to flow in porous media. Study of the microscale phenomena is fundamental to assess the underlying macroscale dynamics. Thus, flow of a suspended capsule in a 2-D planar constricted micro-channel can be used as a model of the capsule flow through two adjacent pore-bodies connected by a pore-throat. The objective is to determine, for a given micro-channel, the maximum pressure peak as a function of different parameters, including elastic properties of capsule membrane and its pre-stress level, capsule radius, micro-channel geometry, liquid properties and flow conditions. The problem was solved using finite element and immersed boundary methods. Results showed that for a given micro-channel and flow conditions, a higher pressure peak is required to get the capsule deformed through the constriction as the capsule gets stiffer, and radius and pre-stress level increase.
Keywords
2-D micro-channel, fluid-structure interaction, Immersed Boundary Method, Finite Element Method
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