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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.1995.tde-10042024-151311
Document
Author
Full name
Cesareo de La Rosa Siqueira
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1995
Supervisor
Committee
Nishimoto, Kazuo (President)
Meneghini, Julio Romano
Veiga, Jorge Pinheiro da Costa
Title in Portuguese
Resolução de escoamentos bidimensionais viscosos turbulentos e incompressíveis em regime permanente através da utilização de mecânica dos fluidos computacional.
Keywords in Portuguese
Dinâmica dos fluídos computacionais
Abstract in Portuguese
Nos últimos 30 anos, a mecânica dos fluídos computacional ou CFD (Computacional Fluid Dynamics) deixou de ser uma ciência de aplicação meramente acadêmica para se tornar uma importante ferramenta no projeto e análise de equipamentos ou corpos na presença de fluidos. Esta dissertação tem por objetivo mostrar e discutir a resolução de alguns escoamentos bidimensionais viscosos turbulentos e incompressíveis em regime permanente, através da utilização da mecânica dos fluidos computacional. Os resultados foram obtidos via programa phoenics, programa que emprega o método dos volumes finitos para a discretização das equações de conservação, utilizando as equações completas de Navier-Stokes em todo o domínio de interesse e o processo de Time Averaging Method para a modelagem matemática do escoamento turbulento. Optou-se pela utilização do modelo de turbulência k-'EPSILON' para os casos analisados. Este trabalho procura fornecer ainda uma revisão dos conceitos e formulações básicas ligadas a mecânica dos fluidos computacional ou CFD, além dos estudos de validação através do programa Phoenics para alguns escoamentos bidimensionais, cujos resultados estão disponíveis na literatura, e para estudos paramétricos de casos de interesse com solução não conhecida.
Title in English
Untitled in english
Keywords in English
Computational fluid dynamics
Abstract in English
In the last 30 years, the Computational Fluid Dynamics (CFD) has heft its original role of being a merely academic Science to become an importante tool for design and analysis of equipment or bodies in the presence of fluids. The CFD can either be used to reduce the hughe number of experiments which are necessary to optimize a design or to show particularities of some fluid flow. Such analysis are very interesting nowadays because the development coasts for a new design might be strongly reduced. This dissertation aims to show and discuss the solution of some bidimensional viscous turbulent flow in steady state, by utilization of Computacional Fluid Dynamics. The results were obtained via PHOENICS, a CFD code which uses the Finite Volume Method for the discretisation of conservation equations. The Navier-Stokes complete equations and the Time Averaging Method were employed to make the mathematical modelo f the turbulent viscous flow. The turbulence model k-'EPSILON' was chosen for the considered cases. This work still tries to give a review of concepts and formulations related to CFD. It will be shown some validation studies using PHOENICS code comparing its results to the well-know values available in the literature. Finally, the PHOENICS software was also used to make parametrical studies for special problems which solutions are still unknow.
 
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Publishing Date
2024-04-10
 
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