Analysis of slug flow in horizontal pipelines by the two fluid model
Analysis of slug flow in horizontal pipelines by the two fluid model

Author:

Publisher:

Published: 2004

Total Pages:

ISBN-13:

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Diversos processos práticos apresentam uma seqüência de diferentes configurações de escoamentos bifásicos, com diferentes padrões de escoamento. Dependendo das razões entre as velocidades superficiais do gás e do líquido, diferentes padrões de escoamento bifásico podem ser encontrados. O padrão de escoamento slug pode ser formado a partir do padrão estratificado, devido ao crescimento das instabilidades hidrodinâmicas ou devido às ondulações noterreno onde se instala a tubulação. O presente trabalho consiste na análise do escoamento bifásico no padrão slug, ao longo de tubulações horizontais, mediante a aplicaçãodo modelo de dois fluidos em sua forma transiente e unidimensional. Através de uma análise de estabilidade de Kelvin-Helmholtz para escoamento estratificado, estima-se a possível faixa de operação para a obtenção de um modelomatemático bem posto. Diferentes técnicas de discretização foram implementadas e testadas. Comparações com dados disponíveis na literatura foram realizadas.

Computational Fluid Dynamics (CFD) to Simulate Slug Flow in Horizontal Pipeline and Annular Pipe
Computational Fluid Dynamics (CFD) to Simulate Slug Flow in Horizontal Pipeline and Annular Pipe

Author: Hassn Hadia

Publisher:

Published: 2018

Total Pages:

ISBN-13:

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Slug flow can emerge as a factor in several industrial processes, especially in the oil and gas (O&G) industry. However, because of the complications that are inherent in multiphase flow, finding or developing a viable analysis tool has thus far proven elusive. For the past few decades, computational fluid dynamics (CFD) has served as the preferred approach in the flow analysis of single phase flow, yet it is only now beginning to be used in multiphase flow. Therefore, if CFD is to be adopted on a larger scale in the (O&G) industry, it is imperative that we first explore the wide variety of models currently existing in the commercial realm. This thesis investigates the commercial CFD package ANSYS 16.2 analysis of (air-water slug flow) and (water-sand slurry flow) inside a horizontal pipe (2-15 m long with a 0.05-0.059 m internal diameter) and an annular pipe (2- 4.5 m long, 0.02- 0.088 m inner and 0.04-0.12 m outer diameter). A range of two-phase air/water flow simulations is carried out using the Eulerian model with the Reynolds Stress Model (RSM), and the volume of fluid (VOF) model with the Shear-Stress-Transport (SST) model option of turbulence. The aim is to simulate a range of fluid velocities between 1.66 and 7 m/s and a range of gas velocities between 0.55 and 11 m/s. Additional investigations include comparing CFD predictions along with experimental measurements in the literature and performing sensitivity studies. In the present work, the impact from fluid-structure interaction (FSI) is demonstrated by using a 2-way coupling in ANSYS, effectively joining CFD and structural analysis. At the same time, stress and pressure changes are measured, along with the deformational structural response arising from unsteady multiphase flow. It is hoped that the outcome of this study will assist engineers and researchers in making better decisions in terms of operation, design, and sizing of two-phase flow systems, as these systems have broad and promising applications in subsea (O&G) pipelines.

Thermo-fluid Dynamics of Two-Phase Flow
Thermo-fluid Dynamics of Two-Phase Flow

Author: Mamoru Ishii

Publisher: Springer Science & Business Media

Published: 2006-09-28

Total Pages: 462

ISBN-13: 0387291873

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This book has been written for graduate students, scientists and engineers who need in-depth theoretical foundations to solve two-phase problems in various technological systems. Based on extensive research experiences focused on the fundamental physics of two-phase flow, the authors present the detailed theoretical foundation of multi-phase flow thermo-fluid dynamics as they apply to a variety of scenarios, including nuclear reactor transient and accident analysis, energy systems, power generation systems and even space propulsion.

Flow Analysis for Hydrocarbon Pipeline Engineering
Flow Analysis for Hydrocarbon Pipeline Engineering

Author: Alessandro Terenzi

Publisher: Gulf Professional Publishing

Published: 2022-05-11

Total Pages: 360

ISBN-13: 0128224835

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Flow Analysis for Hydrocarbon Pipeline Engineering gives engineers a tool to help them determine fluid dynamics. The book describes hydrocarbon fluid transport in pipelines by presenting useful applied thermodynamic derivations specialized for pipelines. All transport phenomena is covered, such as heat, momentum and mass transport. Moving past the fundamentals, the reference addresses the complexity of these fluids and dedicates a chapter on multiphase mixtures, including slugging, hydrates, wax and sand. Rounding out with practical case studies, this book delivers a critical reference for engineers and flow assurance experts that will help them correlate basic fluid principles with applied engineering practices. - Includes discussions on sustainable operations such as CO2 transport in pipelines utilized in carbon capture and hydrocarbon recovery operations - Delivers multiple case studies for practical applications and lessons learned - Describes hydrocarbon fluid transport in pipelines by presenting useful applied thermodynamic derivations specialized for pipelines

Slurry Flow
Slurry Flow

Author: C A Shook

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 337

ISBN-13: 1483292207

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Slurry Flow: Principles and Practice describes the basic concepts and methods for understanding and designing slurry flow systems, in-plan installations, and long-distance transportation systems. The goal of this book is to enable the design or plant engineer to derive the maximum benefit from a limited amount of test data and to generalize operating experience to new situations. Design procedures are described in detail and are accompanied by illustrative examples needed by engineers with little or no previous experience in slurry transport. The technical literature in this field is extensive: this book facilitates its use by surveying current research results and providing explanations of mechanistic flow models. This discussion of background scientific principles helps the practitioner to better interpret test data, select pumps, specify materials of construction, and choose measuring devises for slurry transport systems. The extensive range of topics covered in Slurry Flow: Principles and practice includes slurry rheology, homogeneous and heterogeneous slurry flow principles, wear mechanisms, pumping equipment, instrumentation, and operating aspects.

Computational Methods for Multiphase Flow
Computational Methods for Multiphase Flow

Author: Andrea Prosperetti

Publisher: Cambridge University Press

Published: 2009-06-25

Total Pages: 392

ISBN-13: 1139459902

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Thanks to high-speed computers and advanced algorithms, the important field of modelling multiphase flows is an area of rapid growth. This one-stop account – now in paperback, with corrections from the first printing – is the ideal way to get to grips with this topic, which has significant applications in industry and nature. Each chapter is written by an acknowledged expert and includes extensive references to current research. All of the chapters are essentially independent and so the book can be used for a range of advanced courses and the self-study of specific topics. No other book covers so many topics related to multiphase flow, and it will therefore be warmly welcomed by researchers and graduate students of the subject across engineering, physics, and applied mathematics.