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Author: Joshua Larimer Publisher: ISBN: Category : Languages : en Pages :
Book Description
The purpose of this project is to provide better understanding of horizontal two-phase flow regime transitions through a flow visualization analysis and to provide a comprehensive two-phase flow frictional pressure loss analysis. The flow visualization study was performed using the large diameter horizontal test facility at the Advanced Multi-Phase Flow Laboratory at The Pennsylvania State University. Several flow conditions were analyzed ranging from superficial velocities of 0.1 to 9.45 m/s for the gas phase and 0.1 to 5.5 m/s for the liquid phase. These flow conditions contained multiple runs in each two-phase flow regime: bubbly, plug, slug, stratified, and stratified wavy. The annular flow regime could not be obtained due to limitations of the test facility. A horizontal two-phase flow regime map was generated from the results and compared to previous AMFL work using a small diameter facility in order to assess the effect of pipe size on flow regime transitional boundaries.The comprehensive frictional pressure loss analysis was performed by acquiring frictional pressure loss data from multiple sources including several experiments performed by the AMFL. Horizontal, vertical upward, and vertical downward two-phase flow orientations were analyzed separately due to the varying effects of gravity and buoyancy force on the flow. Several two-phase frictional pressure loss predictive models are analyzed for their accuracy at predicting the measured frictional pressure loss. These models include the Lockhart and Martinelli model that was modified by Chisholm and the - model. The predictive models used in the TRACE and RELAP nuclear reactor analysis codes are compared to the experimental data.
Author: Joshua Larimer Publisher: ISBN: Category : Languages : en Pages :
Book Description
The purpose of this project is to provide better understanding of horizontal two-phase flow regime transitions through a flow visualization analysis and to provide a comprehensive two-phase flow frictional pressure loss analysis. The flow visualization study was performed using the large diameter horizontal test facility at the Advanced Multi-Phase Flow Laboratory at The Pennsylvania State University. Several flow conditions were analyzed ranging from superficial velocities of 0.1 to 9.45 m/s for the gas phase and 0.1 to 5.5 m/s for the liquid phase. These flow conditions contained multiple runs in each two-phase flow regime: bubbly, plug, slug, stratified, and stratified wavy. The annular flow regime could not be obtained due to limitations of the test facility. A horizontal two-phase flow regime map was generated from the results and compared to previous AMFL work using a small diameter facility in order to assess the effect of pipe size on flow regime transitional boundaries.The comprehensive frictional pressure loss analysis was performed by acquiring frictional pressure loss data from multiple sources including several experiments performed by the AMFL. Horizontal, vertical upward, and vertical downward two-phase flow orientations were analyzed separately due to the varying effects of gravity and buoyancy force on the flow. Several two-phase frictional pressure loss predictive models are analyzed for their accuracy at predicting the measured frictional pressure loss. These models include the Lockhart and Martinelli model that was modified by Chisholm and the - model. The predictive models used in the TRACE and RELAP nuclear reactor analysis codes are compared to the experimental data.
Author: Munzarin Morshed Publisher: ISBN: Category : Languages : en Pages :
Book Description
The characteristics of multiphase fluid flow in pipes are useful to understand fluid dynamics encountered in the oil and gas, chemical and production industries. During the transport of different types of fluid, understanding the hydrodynamic behavior inside the pipe network is important for flow assurance. The presence of relative agitation in the interfaces and inconstant interactions among distinct phases, multiphase flow becomes a complex conveyance phenomenality in contrast to single-phase flow. This study is focused on gas/Newtonian and gas/non-Newtonian two-phase horizontal flow structure. This investigation ranges from analyzing volume fraction, pressure drop, flow regime identification, flow structure analysis, etc. This involves recognition of the two-phase flow regimes for this flow loop and validates it with the existing flow maps in the literature. In another study, slug frequency has been examined and compared with air/Newtonian and air/non-Newtonian fluid in the flow loop. Finally, wavelet packet transformation is used to decomposition pressure signals for different flow pattern.
Author: Afshin J. Ghajar Publisher: Springer ISBN: 9783030416256 Category : Science Languages : en Pages : 0
Book Description
This book provides design engineers using gas-liquid two-phase flow in different industrial applications the necessary fundamental understanding of the two-phase flow variables. Two-phase flow literature reports a plethora of correlations for determination of flow patterns, void fraction, two- phase pressure drop and non-boiling heat transfer correlations. However, the validity of a majority of these correlations is restricted over a narrow range of two -phase flow conditions. Consequently, it is quite a challenging task for the end user to select an appropriate correlation/model for the type of two-phase flow under consideration. Selection of a correct correlation also requires some fundamental understanding of the two-phase flow physics and the underlying principles/assumptions/limitations associated with these correlations. Thus, it is of significant interest for a design engineer to have knowledge of the flow patterns and their transitions and their influence on two-phase flow variables. To address some of these issues and facilitate selection of appropriate two-phase flow models, this volume presents a succinct review of the flow patterns, void fraction, pressure drop and non-boiling heat transfer phenomenon and recommend some of the well scrutinized modeling techniques.
Author: Volfango Bertola Publisher: CISM International Centre for Mechanical Sciences ISBN: Category : Science Languages : en Pages : 450
Book Description
This is an up-to-date review of recent advances in the study of two-phase flows, with focus on gas-liquid flows, liquid-liquid flows, and particle transport in turbulent flows. The book is divided into several chapters, which after introducing basic concepts lead the reader through a more complex treatment of the subjects. The reader will find an extensive review of both the older and the more recent literature, with abundance of formulas, correlations, graphs and tables. A comprehensive (though non exhaustive) list of bibliographic references is provided at the end of each chapter. The volume is especially indicated for researchers who would like to carry out experimental, theoretical or computational work on two-phase flows, as well as for professionals who wish to learn more about this topic.
Author: S. Mostafa Ghiaasiaan Publisher: Cambridge University Press ISBN: 1316785300 Category : Technology & Engineering Languages : en Pages : 1322
Book Description
Providing a comprehensive introduction to the fundamentals and applications of flow and heat transfer in conventional and miniature systems, this fully enhanced and updated edition covers all the topics essential for graduate courses on two-phase flow, boiling, and condensation. Beginning with a concise review of single-phase flow fundamentals and interfacial phenomena, detailed and clear discussion is provided on a range of topics, including two-phase hydrodynamics and flow regimes, mathematical modeling of gas-liquid two-phase flows, pool and flow boiling, flow and boiling in mini and microchannels, external and internal-flow condensation with and without noncondensables, condensation in small flow passages, and two-phase choked flow. Numerous solved examples and end-of-chapter problems that include many common design problems likely to be encountered by students, make this an essential text for graduate students. With up-to-date detail on the most recent research trends and practical applications, it is also an ideal reference for professionals and researchers in mechanical, nuclear, and chemical engineering.
Author: Geoffrey Hewitt Publisher: Elsevier ISBN: 1483285235 Category : Technology & Engineering Languages : en Pages : 327
Book Description
Annular Two-Phase Flow presents the wide range of industrial applications of annular two-phase flow regimes. This book discusses the fluid dynamics and heat transfer aspects of the flow pattern. Organized into 12 chapters, this book begins with an overview of the classification of the various types of interface distribution observed in practice. This text then examines the various regimes of two-phase flow with emphasis on the regions of occurrence of the annular flow regime. Other chapters consider the single momentum and energy balances, which illustrate the differences and analogies between single- and two-phase flows. This book discusses as well the simple modes for annular flow with consideration to the calculation of the profile of shear stress in the liquid film. The final chapter deals with the techniques that are developed for the measurement of flow pattern, entrainment, and film thickness. This book is a valuable resource for chemical engineers.
Author: Joshua Larimer
Author: Joshua Larimer
Author: Munzarin Morshed
Author: Van Thanh Nguyen
Author: Braden McDermott
Author: John H. Vohr
Author: Afshin J. Ghajar
Author: Walter James
Author: Volfango Bertola
Author: S. Mostafa Ghiaasiaan
Author: Geoffrey Hewitt