Two Phase Flow Simulation Methods
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Numerical Simulation of the Wake Structure and Thrust/Lift Generation of a Pitching Airfoil at Low Reynolds Number Via an Immersed Boundary Method
ABSTRACT: In this study, an accurate computational algorithm in the context of immersed boundary methods is developed and used to analyze an incompressible flow around a pitching symmetric airfoil at Reynolds number (Re = 255). The boundary conditions are accurately implemented by an iterative procedure applied at each time step, and the pressure is also upd
J. Aerosp. Technol. Manag.. Publicado em: 2015-09
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2. Representação de mistura de petróleos com abordagem composicional / Representation of petroleum mixture with composicional approach
In recent years, with the increasing complexity of production projects requires that the numerical flow simulators are able to simulate new situations and production scenarios. In the case of convergence points where two or more fluids with different characterizations are mixed and represented by a compositional approach, the numerical representation it beco
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2012
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3. Simulação do escoamento monofásico em um estágio de uma bomba centrífuga utilizando técnicas de fluidodinâmica computacional
Oil production and exploration techniques have evolved in the last decades in order to increase fluid flows and optimize how the required equipment are used. The base functioning of Electric Submersible Pumping (ESP) lift method is the use of an electric downhole motor to move a centrifugal pump and transport the fluids to the surface. The Electric Submersib
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/12/2010
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4. Simulação experimental da interação vento-chuva / Experimental simulation of the wind-rain interaction
Simultaneous occurrences of the combined action of rain and wind in different types of structures have been observed around of the world in the last 20 years. This mechanism has been causing curiosity to engineers and researchers due to their jeopardizing consequences to constructions. In these last twenty years people has been seeking for a way to simulate,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2010
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5. Simulação numérica do escoamento bifásico em meios porosos heterogêneos empregando uma formulação semi-implícita, imitadores de fluxo e o método dos volumes finitos / Numerical simulation of two-phase flow in heterogeneous porous media applying a semi-implicit formulation, flux limiter and finite volume method
A new numerical method is proposed for the solution of two-phase flow problem in petroleum reservoirs. The two-phase (water and oil) flow problem is governed by a pressure-velocity equation coupled to a saturation equation. For computational eficiency an operator spliting technique is used; distinct time steps can be used for the computation of transport and
Publicado em: 2009
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6. Superfícies de pontos dinâmicas / Dynamic point set surfaces
The study of the behaviour of fluids is an ancient field in natural sciences. Recently, engineering phenomena that were empirically studied started to be done with computacional aid. The Computational Fluid Dynamics (CFD) is the area of science that studies computational methods for computer simulation of fluid flow, and often is the most practical way, or t
Publicado em: 2009
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7. Central schemes for porous media flows
We are concerned with central differencing schemes for solving scalar hyperbolic conservation laws arising in the simulation of multiphase flows in heterogeneous porous media. We compare the Kurganov-Tadmor (KT) [3] semi-discrete central scheme with the Nessyahu-Tadmor (NT) [27] central scheme. The KT scheme uses more precise information about the local spee
Computational & Applied Mathematics. Publicado em: 2009
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8. Modelagem dinâmica de separador bifásico com alimentação por escoamento em regime de golfadas / Dynamic modeling of two-phase separator with feeding for draining in regimen of slug
O presente trabalho aborda o comportamento da planta de processamento primário com alimentação por fluxo em padrão de golfadas. O fluxo no sistema de tubulações é descrito por um modelo de parâmetros concentrados, fornecendo as características principais necessárias para o controle da planta, e a resposta dinâmica desta pode então ser analisada.
Publicado em: 2008
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9. Computational modeling of two and three-phase flow in heterogeneous petroleum reservoirs / Modelagem computacional de escoamentos com duas e três fases em reservatórios petrolíferos heterogêneos
Considera-se neste trabalho um modelo matemático para escoamentos com duas e três fases em reservatórios petrolíferos e a modelagem computacional do sistema de equações governantes para a sua solução numérica. Os fluidos são imiscíveis e incompressíveis e as heterogeneidades da rocha reservatório são modeladas estocasticamente. Além disso, é
Publicado em: 2008
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10. Detailed Two-Dimensional Numerical Analysis of Multiphase Flows / Análise numérica detalhada de escoamentos multifásicos bidimensionais
The mathematical modeling of multiphase flows involves the interaction between deformable and moving geometries with the fluid in which they are dispersed (immersed). This kind of interaction is present in many practical applications. A common approach to handle these problems is the so called Front-Tracking/Front-Capturing Hybrid Methods. This methodology c
Publicado em: 2007
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11. Novos esquemas centrais de diferenças finitas para a simulação de escoamentos multifásicos em reservatórios de petróleo / New finite-difference central schemes applied to multiphase flows in petroleum reservoirs
Os escoamentos bifásicos incompressíveis água-óleo são modelados por um sistema de equações diferenciais parciais nas incógnitas velocidade, pressão e saturação. Neste trabalho é apresentado um novo método numérico em duas dimensões espaciais para a resolução numérica da equação de transporte de massa. Suas principais características sã
Publicado em: 2007
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12. Injection of the tracers in petroleum reservoir: multiscale modeling and numerical simulation / Injeção de traçadores em reservatórios de petróleo: modelagem multi-escala e simulação numérica
The spatial variations in porous media (aquifers and petroleum reservoirs) occur at all length scales (from the pore scale to the reservoir scale) and are incorporated in the governing equations for multiphase flow problems on the basis of random fields (geostatistical models). As a consequence, the velocity field is a random function of space. The randomnes
Publicado em: 2006