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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2004.tde-15122023-095455
Document
Author
Full name
Alison Bonaccorsi
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2004
Supervisor
Committee
Meneghini, Julio Romano (President)
Aranha, Jose Augusto Penteado
Morooka, Celso Kazuyuki
Title in Portuguese
Estudo do escoamento bidimensional ao redor de dois cilindros em "tandem" utilizando o método dos elementos finitos.
Keywords in Portuguese
Dinâmica dos fluídos
Método dos elementos finitos
Vórtices dos fluídos
Abstract in Portuguese
O presente trabalho, no âmbito da engenharia oceânica e da tecnologia marítima, compreende um estudo computacional do fenômeno de emissão de vórtices a partir de corpos rombudos, inseridos num escoamento de fluido newtoniano, incompressível e viscoso. O problema é abordado do ponto de vista bidimensional. Suas equações são discretizadas através do Método dos Elementos Finitos (MEF) e implementadas com o Fractional Step Method (FSM). Após a validação dos simuladores numéricos através do estudo do escoamento ao redor de um único cilindro circular, avalia-se o comportamento das forças hidrodinâmicas sobre dois similares, dispostos em configuração "tandem", para distintos espaçamentos entre seus centros, sob número de Reynolds 200. Os resultados são confrontados com os procedentes da literatura.
Title in English
Untitled in english
Keywords in English
Finite element method
Fluid dynamics
Fluid vortices
Abstract in English
This work is set in the context of oceanic engineering and maritime technology, presenting a computational study of the vortex-shedding phenomenon from bluff bodies inserted in a flow of Newtonian incompressible viscous fluid. The problem is approached from the two-dimensional standpoint. Its governing equations are discretized through the Finite Element Method (FEM) and are implemented with the Fractional Step Method (FSM). Validation of the numerical simulations was achieved through the study of the flow around a single circular cylinder. Then, the behavior of the hydrodynamic forces on two cylinders arranged in tandem configuration for distinct gaps between their axes under Reynolds number 200, is evaluated. The results are confronted with those from literature.
 
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Publishing Date
2023-12-15
 
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