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COBEM 2019
25th International Congress of Mechanical Engineering
NUMERICAL ANALYSIS OF VORTEX FORMATION IN THE NON-NEWTONIAN FLUID FLOW IN ABRUPT CONTRACTION GEOMETRY
Submission Author:
andrevidy honório , PR
Co-Authors:
andrevidy honório, João Pedro Costa Eliziário, Marcos Lourenço, Jonatas Borges
Presenter: Jonatas Borges
doi://10.26678/ABCM.COBEM2019.COB2019-1446
Abstract
Fluid flows through a sudden contraction are common in many engineering applications. Although there exists a number of works involving Newtonian fluids, in the related phenomenon concerning rheological fluids, it seems that a number of parameters and details still need to be addressed. The behavior of a Non-Newtonian fluid flow through a sudden contraction is presented in this work. The laminar, incompressible and axisymmetric flow is modeled by mass and momentum conservation equations and Power Law’s model viscosity. Conservations equations were discretized by (FVM) Finite Volume Method, the method SimpleFoam was used for solve coupling pressure velocity. Results are shown for different Power Law indexes and the determined results agreed qualitatively with the physical interpretations, the behavior of the flow was analyzed near the contraction, observing as the fluids with differents characteristics behave when they change the flow direction. Was concluded that the fluid with more viscosity has smaller recirculation when compared with the fluid of smaller viscosity.
Keywords
Finite Volume Method., Sudden Contraction, Steady State Flow, Non Newtonian Fluids
