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Master's Dissertation
DOI
https://doi.org/10.11606/D.55.2016.tde-28112016-161604
Document
Author
Full name
Camila Faria Afonso Lages
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2016
Supervisor
Committee
Sousa, Fabrício Simeoni de (President)
Mangiavacchi, Norberto
Souza, Leandro Franco de
Title in Portuguese
Métodos numéricos para escoamentos multifásicos em malhas hierárquicas
Keywords in Portuguese
Acompanhamento de fronteira
Diferenças finitas
Escoamento incompressível
Força superficial contínua
Malhas hierárquicas
Multifásico.
Abstract in Portuguese
O objetivo desta dissertação de mestrado é estudar técnicas numéricas para simular escoamentos incompressíveis multifásicos e implementar uma ferramenta computacional utilizando malhas hierárquicas e discretizações por diferenças finitas. São apresentados a formulação matemática e o desenvolvimento do método numérico, levando em consideração o caráter multifásico do escoamento. Foi adotado o modelo de força superficial contínua e a representação da interface foi feita pelo método de acompanhamento de fronteira. São expostos todos os testes realizados durante o desenvolvimento da ferramenta para checar cada etapa do método. Finalmente, testes visando verificar o código foram feitos e os resultados obtidos foram considerados satisfatórios para a verificação da ferramenta aqui desenvolvida.
Title in English
Numerical methods for multiphase flows using hierarchical grids
Keywords in English
Continuum surface force
Finite diferences
Front tracking
Hierachical meshes
Incompressible flow
Multiphase
Abstract in English
The objective of this masters degree essay is to study numerical techniques to simulate incompressible multiphase flows and to implement a computational tool using hierachical meshes and discretizations by finite diferences. We introduce the mathematical formulation and the development of the numerical method, for the multiphase flow problem. A continuum surface force model is employed with the interface representation by the front tracking method. We show all tests performed to verify each stage of the methods development. Finally, results obtained in classical benchmark flow tests show good agreement with previous published results, corroborating the validity of this newly developed numerical tool.
 
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Publishing Date
2016-11-28
 
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