The Measurement of Two-phase Flow Parameters in Vertical and Deviated Flows PDF Download

Author: G. P. Lucas
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Author: Volfango Bertola
Publisher: Springer
ISBN: 3709125383
Category : Technology & Engineering
Languages : en
Pages : 433

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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: Kent C. Abel
Publisher:
ISBN:
Category : Two-phase flow
Languages : en
Pages : 232

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The next generation of nuclear safety analysis computer codes will include detailed modeling of the interfacial area concentration. The interfacial area concentration is the essence of the two-fluid model. It is the most accurate of the two-phase models since it considers each phase independently and links the two phases together with six conservation equations. The interfacial area concentration, along with a driving potential, determines the energy, momentum and mass transfer between the two phases. The importance of this research lies in obtaining a greater understanding of the developing nature of two-phase flows and the application of the two-fluid model. With proper characterization of two-phase flow, the next generation of nuclear safety analysis computer codes will be able to incorporate this information to predict parameters during an accident scenario with greater precision. This research will provide a first order look into the developing nature of two-phase flow. As part of this research, the development of two-phase flow in a vertical column was analyzed using double sensor impedance probes. The resident vapor and liquid times were recorded along with the velocity of the vapor phase. By creating distributions of the bubble residence times, liquid residence times, velocities, and sizes, one can characterize the developing nature of the two-phase flow. Data was taken at four different axial locations for six different flow rates. The resulting data show clear trends in how the standard deviation and mean values for the measured parameters change as a function of flow rate and axial position. The void fraction contribution from the spherical/distorted bubble group as well as the cap/slug bubble group was also recorded to determine the net transfer rate of vapor between the two bubble groups. Interfacial area concentration was not included in the measurement since the probes that were used can only determine interfacial area concentration for spherical bubbles. Further research will be conducted with the inclusion of interfacial area concentration at a later time.

Author: Geoffrey Frederick Hewitt
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 304

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Author: Shih-i Pai
Publisher: Springer-Verlag
ISBN: 3322863484
Category : Science
Languages : de
Pages : 373

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Author: Cl Kleinstreuer
Publisher: Routledge
ISBN: 1351406485
Category : Science
Languages : en
Pages : 472

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Book Description
This graduate text provides a unified treatment of the fundamental principles of two-phase flow and shows how to apply the principles to a variety of homogeneous mixture as well as separated liquid-liquid, gas-solid, liquid-solid, and gas-liquid flow problems, which may be steady or transient, laminar or turbulent.Each chapter contains several sample problems, which illustrate the outlined theory and provide approaches to find simplified analytic descriptions of complex two-phase flow phenomena.This well-balanced introductory text will be suitable for advanced seniors and graduate students in mechanical, chemical, biomedical, nuclear, environmental and aerospace engineering, as well as in applied mathematics and the physical sciences. It will be a valuable reference for practicing engineers and scientists. A solutions manual is available to qualified instructors.

Author: John H. Vohr
Publisher:
ISBN:
Category : Two-phase flow
Languages : en
Pages : 64

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Author: Zhong-Ke Gao
Publisher: Springer Science & Business Media
ISBN: 3642383734
Category : Technology & Engineering
Languages : en
Pages : 109

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Understanding the dynamics of multi-phase flows has been a challenge in the fields of nonlinear dynamics and fluid mechanics. This chapter reviews our work on two-phase flow dynamics in combination with complex network theory. We systematically carried out gas-water/oil-water two-phase flow experiments for measuring the time series of flow signals which is studied in terms of the mapping from time series to complex networks. Three network mapping methods were proposed for the analysis and identification of flow patterns, i.e. Flow Pattern Complex Network (FPCN), Fluid Dynamic Complex Network (FDCN) and Fluid Structure Complex Network (FSCN). Through detecting the community structure of FPCN based on K-means clustering, distinct flow patterns can be successfully distinguished and identified. A number of FDCN’s under different flow conditions were constructed in order to reveal the dynamical characteristics of two-phase flows. The FDCNs exhibit universal power-law degree distributions. The power-law exponent and the network information entropy are sensitive to the transition among different flow patterns, which can be used to characterize nonlinear dynamics of the two-phase flow. FSCNs were constructed in the phase space through a general approach that we introduced. The statistical properties of FSCN can provide quantitative insight into the fluid structure of two-phase flow. These interesting and significant findings suggest that complex networks can be a potentially powerful tool for uncovering the nonlinear dynamics of two-phase flows.

Author: J. A. Shercliff
Publisher: CUP Archive
ISBN: 9780521335546
Category : Science
Languages : en
Pages : 166

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This book is a graduate-level introduction to the theory of electro-magnetic flow-measurement. Although the sophistication of the instrumentation has changed radically since Shercliff's book was first published, the theoretical principles expounded in the book are still relevant and sound. Students of mechanical engineering and research workers will find this reissue useful.

Author: A Plaskowski
Publisher: CRC Press
ISBN: 9780750302968
Category : Science
Languages : en
Pages : 242

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Book Description
The first authoritative account of the industrial potential of tomographic imaging techniques, Imaging Industrial Flows: Applications of Electrical Process Tomography provides an overview of the instrumentation used in process tomography. Assuming only a basic knowledge of instrumentation, electronics, and computing systems, the authors concisely describe the principles behind the operation of image reconstruction techniques and the application of electrical tomography to measuring flows in pipelines and other industrial equipment. This reference will help you improve the efficiency of measurement and control equipment, monitor industrial effluents, and increase the efficiency and safety of process plant equipment, in particular, in the chemical engineering, oil technology, and flow measurement instrumentation industries.