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Numerical methods for non-Newtonian free surface flows: effects of surface tension

Grant number: 17/11428-2
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): August 01, 2017
Status:Discontinued
Field of knowledge:Physical Sciences and Mathematics - Mathematics
Principal Investigator:José Alberto Cuminato
Grantee:Débora de Oliveira Medeiros
Home Institution: Instituto de Ciências Matemáticas e de Computação (ICMC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:13/07375-0 - CeMEAI - Center for Mathematical Sciences Applied to Industry, AP.CEPID
Associated scholarship(s):19/08742-2 - Stabilization schemes for solving viscoelastic free surface flows with surface tension effects, BE.EP.DR

Abstract

This project proposes the study of numerical methods for the solution of incompressible and non-Newtonian fluid flows, with emphasis on the effects of surface tension. Mathematical modeling involves the Navier-Stokes equations and a system of equations that define the contribution of the non-Newtonian tensor. In addition, the modeling will use the conditions of free surface contour considering the incorporation of the surface tension. In the context of the MAC method, the numerical formulation will combine a discretization of finite differences with a projection method and a representation of the interface (free surface) by the method of marking (Front-tracking). The numerical methods developed will be applied to the solution of micro-flows of complex fluids. In this class of problems, in addition to the difficulties encountered in the treatment of the equations that define the non-Newtonian model, a challenge is the accurate numerical treatment of the effects of surface tension. Therefore, this doctoral project aims to expand the use of computational tools for the solution of industrial problems and applications of science and engineering.