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Drag Reduction Of Complex Mixtures

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Drag Reduction of Complex Mixtures

Drag Reduction of Complex Mixtures Book
Author : Keizo Watanabe
Publisher : Academic Press
Release : 2018-06-15
ISBN : 0128099429
Language : En, Es, Fr & De

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Book Description :

Drag Reduction of Complex Mixtures discusses the concept of drag reduction phenomena in complex mixtures in internal and external flows that are shown experimentally by dividing flow patterns into three categories. The book is intended to support further experiments or analysis in drag reduction. As accurately modeling flow behavior with drag reduction is always complex, and since drag reducing additives or solid particles are mixed in fluids, this book covers these complex phenomena in a concise, but comprehensive manner. Comprehensively addresses a range of drag reduction themes involving different kinds of complex mixtures Provides data to support further experimentation and computer modeling of drag in complex flow Includes an introduction to the nature and characteristics of different kinds of complex mixtures

Rheology of Drag Reducing Fluids

Rheology of Drag Reducing Fluids Book
Author : Aroon Shenoy
Publisher : Springer Nature
Release : 2020-03-25
ISBN : 303040045X
Language : En, Es, Fr & De

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Book Description :

​This book explains theoretical derivations and presents expressions for fluid and convective turbulent flow of mildly elastic fluids in various internal and external flow situations involving different types of geometries, such as the smooth/rough circular pipes, annular ducts, curved tubes, vertical flat plates, and channels. Understanding the methodology of the analyses facilitates appreciation for the rationale used for deriving expressions of parameters relevant to the turbulent flow of mildly elastic fluids. This knowledge serves as a driving force for developing new ideas, investigating new situations, and extending theoretical analyses to other unexplored areas of the rheology of mildly elastic drag reducing fluids.The book suits a range of functions--it can be used to teach elective upper-level undergraduate or graduate courses for chemical engineers, material scientists, mechanical engineers, and polymer scientists; guide researchers unexposed to this alluring and interesting area of drag reduction; and serve as a reference to all who want to explore and expand the areas dealt with in this book.

Surfactant Drag Reduction Using Mixed Counterions

Surfactant Drag Reduction Using Mixed Counterions Book
Author : Diana Snelling
Publisher : Unknown
Release : 2006
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Abstract: This study focused on using mixtures of counterions to improve the performance of a cationic surfactant over single counterions. The concentration of surfactant and total counterion concentration remained constant while the ratio of each counterion was varied. The cationic surfactant cetyltrimethylammonium chloride (CTAC) was tested with counterions sodium ethylbenzenesulfonate (NaEbs), sodium 3-hydroxy-2-naphthoate (SHN), and sodium salicylate (NaSal). Organic counterions stabilize threadlike micelles in surfactant solutions and enable turbulent drag reduction. Cryo-TEM imaging was used to visualize the nanostructures of our complex fluids. Counterion mixtures were tested in both water and ethylene glycol/water solutions. Certain ratios of counterions resulted in increased maximum drag reduction and effective temperature range compared with either counterion at the same total counterion concentration. The aqueous system of 75% NaSal and 25% SHN gave effective drag reduction over the entire temperature range of our testing system (2-95°C). This surfactant system is a candidate for use in conventional aqueous district cooling and in aqueous district heating systems. Surfactant solutions with mixed counterions in 20% ethylene glycol/water showed the same pattern of behavior as in water but with less effective drag reduction. Lower effective upper temperatures and lower maximum drag reductions were found in the 20% EG/water solvent.

Advanced Manufacturing Processes

Advanced Manufacturing Processes Book
Author : Volodymyr Tonkonogyi,Vitalii Ivanov,Justyna Trojanowska,Gennadii Oborskyi,Milan Edl,Ivan Kuric,Ivan Pavlenko,Predrag Dasic
Publisher : Springer Nature
Release : 2020-03-27
ISBN : 3030407241
Language : En, Es, Fr & De

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Book Description :

This book offers a timely yet comprehensive snapshot of innovative research and developments in the area of manufacturing. It covers a wide range of manufacturing processes, such as cutting, coatings, and grinding, highlighting the advantages provided by the use of new materials and composites, as well as new methods and technologies. It discusses topics in energy generation and pollution prevention. It shows how computational methods and mathematical models have been applied to solve a number of issues in both theoretical and applied research. Based on selected papers presented at the Grabchenko’s International Conference on Advanced Manufacturing Processes (InterPartner-2019), held in Odessa, Ukraine on September 10-13, 2019, this book offers a timely overview and extensive information on trends and technologies in the area of manufacturing, mechanical and materials engineering. It is also intended to facilitate communication and collaboration between different groups working on similar topics, and to offer a bridge between academic and industrial researchers.

Applied Mechanics Reviews

Applied Mechanics Reviews Book
Author : Anonim
Publisher : Unknown
Release : 1991
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Applied Mechanics Reviews book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Investigating the Degradation Resistance Improvement of the Polymeric Drag Reduction

Investigating the Degradation Resistance Improvement of the Polymeric Drag Reduction Book
Author : Esmail Abdullah Mohammed Basheer
Publisher : Unknown
Release : 2013
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

An important practical aspect in the application and study of drag reduction by polymer additives is the degradation of the polymer, for instance due to intense shearing, especially in circulatory flow systems. Such degradation leads to a marked loss of the drag-reducing capability of the polymer. Polymers-Surfactant complex efficacy in reducing the drag and improving the degradation resistance is a new subject in drag reduction research. Turbulent drag reduction (DR) efficacy of ionic Sodium Polystyrene Sulfonate (NaPSS) and sodium Alkylbenzene sulfonate, complexes systems regarding polymer-surfactant interaction was examined under a turbulent flow in a rotating disk apparatus, in which the DR efficacy indicates how the torque is being reduced with a tiny amount of additives under a turbulent flow at a fixed rotational speed. It was found that the addition of the surfactant to the ionic increased the polymer chain dimensions via a conformational structural change, thus enhancing the DR efficacy. Polymer-surfactant system also shows that there exists a critical polymer concentration at which the drag reduction becomes a maximum, and then above the critical concentration, the DR efficacy decreases more rapidly than that of pure polymeric systems. On the other hand, it was found that the addition of the surfactant to the ionic polymer enhance its ability to resist the degradation caused by the high shear stress in the eddy flow. The addition of sodium Alkylbenzene sulfonate to the ionic polymer was found to have higher improvement than the addition of DDAB in degradation resistance. The DR and degradation resistance efficacy induced by the polymer-surfactant mixture is found to be obvious higher than of pure polymer. In addition, the maximum of DR efficacy versus polymer concentration occurred at 700 ppm.

CRC Handbook of Thermal Engineering

CRC Handbook of Thermal Engineering Book
Author : Raj P. Chhabra
Publisher : CRC Press
Release : 2017-11-08
ISBN : 149871529X
Language : En, Es, Fr & De

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Book Description :

The CRC Handbook of Thermal Engineering, Second Edition, is a fully updated version of this respected reference work, with chapters written by leading experts. Its first part covers basic concepts, equations and principles of thermodynamics, heat transfer, and fluid dynamics. Following that is detailed coverage of major application areas, such as bioengineering, energy-efficient building systems, traditional and renewable energy sources, food processing, and aerospace heat transfer topics. The latest numerical and computational tools, microscale and nanoscale engineering, and new complex-structured materials are also presented. Designed for easy reference, this new edition is a must-have volume for engineers and researchers around the globe.

Viscous Drag Reduction in Boundary Layers

Viscous Drag Reduction in Boundary Layers Book
Author : Dennis M. Bushnell
Publisher : AIAA
Release : 1990
ISBN : 9781600863783
Language : En, Es, Fr & De

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Book Description :

Download Viscous Drag Reduction in Boundary Layers book written by Dennis M. Bushnell, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Handbook of Conveying and Handling of Particulate Solids

Handbook of Conveying and Handling of Particulate Solids Book
Author : A. Levy,Christopher J Kalman
Publisher : Elsevier
Release : 2001-10-22
ISBN : 9780080533285
Language : En, Es, Fr & De

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Book Description :

This handbook presents comprehensive coverage of the technology for conveying and handling particulate solids. Each chapter covers a different topic and contains both fundamentals and applications. Usually, each chapter, or a topic within a chapter, starts with one of the review papers. Chapter 1 covers the characterization of the particulate materials. Chapter 2 covers the behaviour of particulate materials during storage, and presents recent developments in storage and feeders design and performance. Chapter 3 presents fundamental studies of particulate flow, while Chapters 4 and 5 present transport solutions, and the pitfalls of pneumatic, slurry, and capsule conveying. Chapters 6, 7 and 8 cover both the fundamentals and development of processes for particulate solids, starting from fluidisation and drying, segregation and mixing, and size-reduction and enlargement. Chapter 9 presents environmental aspects and the classification of the particulate materials after they have been handled by one of the above-mentioned processes. Finally, Chapter 10 covers applications and developments of measurement techniques that are the heart of the analysis of any conveying or handling system.

Surfactants in Tribology

Surfactants in Tribology Book
Author : Girma Biresaw,K.L. Mittal
Publisher : CRC Press
Release : 2014-11-21
ISBN : 1466583371
Language : En, Es, Fr & De

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Book Description :

Surface science and tribology play very critical roles in many industries. Manufacture and use of almost all consumer and industrial products rely on the application of advanced surface and tribological knowledge. The fourth in a series, Surfactants in Tribology, Volume 4 provides an update on research and development activities connecting surfactants and tribological phenomena. Written by renowned subject matter experts, the book demonstrates how improved design of surfactants can be harnessed to control tribological phenomena. Profusely illustrated and copiously referenced, the chapters also discuss novel approaches to control tribological phenomena using surfactants including green surfactants. It also discusses the underlying tribological and surface science issues relevant to many situations in diverse industries. The information in this volume provides a cutting-edge reference connecting the fields of surfactants and tribology as a way forward to novel, enhanced methods of controlling lubrication, friction, and wear. It reflects the latest developments, highlighting the relevance of surfactants in tribological phenomena in a broad range of industries. As we learn more about the connection between surfactants and tribology, new and improved ways to control lubrication, friction, and wear utilizing surfactants will emerge. This book takes us farther on the path towards this goal.

Developments in the Flow of Complex Fluids in Tubes

Developments in the Flow of Complex Fluids in Tubes Book
Author : Dennis A. Siginer
Publisher : Springer
Release : 2014-11-11
ISBN : 3319024264
Language : En, Es, Fr & De

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Book Description :

This book is dedicated to the tube flow of viscoelastic fluids and Newtonian single and multi-phase particle-laden fluids. This succinct volume collects the most recent analytical developments and experimental findings, in particular in predicting the secondary field, highlighting the historical developments which led to the progress made. This book brings a fresh and unique perspective and covers and interprets efforts to model laminar flow of viscoelastic fluids in tubes and laminar and turbulent flow of single and multi-phase particle-laden flow of linear fluids in the light of the latest findings.

Drag Reduction of Turbulent Flows by Additives

Drag Reduction of Turbulent Flows by Additives Book
Author : A. Gyr,H.-W. Bewersdorff
Publisher : Springer Science & Business Media
Release : 2013-03-09
ISBN : 9401712956
Language : En, Es, Fr & De

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Book Description :

Drag Reduction of Turbulent Flows by Additives is the first treatment of the subject in book form. The treatment is extremely broad, ranging from physicochemical to hydromechanical aspects. The book shows how fibres, polymer molecules or surfactants at very dilute concentrations can reduce the drag of turbulent flow, leading to energy savings. The dilute solutions are considered in terms of the physical chemistry and rheology, and the properties of turbulent flows are presented in sufficient detail to explain the various interaction mechanisms. Audience: Those active in fundamental research on turbulence and those seeking to apply the effects described. Fluid mechanical engineers, rheologists, those interested in energy saving methods, or in any other application in which the flow rate in turbulent flow should be increased.

Surfactants in Tribology Volume 5

Surfactants in Tribology  Volume 5 Book
Author : Girma Biresaw,K.L. Mittal
Publisher : CRC Press
Release : 2017-09-11
ISBN : 1498734804
Language : En, Es, Fr & De

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Book Description :

Surfactants play a critical role in Tribology controlling friction, wear, and lubricant properties such as emulsification, demulsification, bioresistance, oxidation resistance, rust prevention and corrosion resistance. This is a critical topic for new materials and devices particularly those built at the nanoscale. This newest volume will address tribological properties of cutting fluids, lubricant performance related to steel surfaces, biolubricants, and novel materials and ways to reduce friction and wear. Scientists from industrial research and development (R&D) organizations and academic research teams in Asia, Europe, the Middle East and North America will participate in the work.

Drag Reduction

Drag Reduction Book
Author : Robert H. J. Sellin,R. T. Moses
Publisher : Unknown
Release : 1984
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Drag Reduction book written by Robert H. J. Sellin,R. T. Moses, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

EPA Publications Bibliography

EPA Publications Bibliography Book
Author : United States. Environmental Protection Agency
Publisher : Unknown
Release : 1987
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download EPA Publications Bibliography book written by United States. Environmental Protection Agency, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Fossil Energy Update

Fossil Energy Update Book
Author : Anonim
Publisher : Unknown
Release : 1985
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Fossil Energy Update book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Polymer Mechanochemistry

Polymer Mechanochemistry Book
Author : Roman Boulatov
Publisher : Springer
Release : 2015-10-17
ISBN : 3319228250
Language : En, Es, Fr & De

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Book Description :

The series Topics in Current Chemistry presents critical reviews of the present and future trends in modern chemical research. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field. Review articles for the individual volumes are invited by the volume editors. Readership: research chemists at universities or in industry, graduate students.

Structure of Turbulence and Drag Reduction

Structure of Turbulence and Drag Reduction Book
Author : Albert Gyr
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 3642509711
Language : En, Es, Fr & De

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Book Description :

In 1976 a similar titled IUTAM Symposium (Structure of Turbulence and Drag Reduction) was held in Washington . However, the progress made during the last thirteen years as weil as the much promising current research desired a second one this year. In Washington drag reduction by additives and by direct manipulation of the walls (compliant walls and heated surfaces) were discussed. In the meantime it became evident that drag reduction also occurs when turbulence is influenced by geometrical means, e.g. by influencing the pressure distribution by the shape of the body (airfoils) or by the introduction of streamwise perturbances on a body (riblets). In the recent years turbulence research has seen increasing attention being focused on the investigation of coherent structures, mainly in Newtonian fluids. We all know that these structures are a significant feature of turbulent flows, playing an important role in the energy balance in such flows. However their place in turbulence theories as weil as the factors influencing their development are still poorly understood. Consequently, the investigation of phenomena in which the properties of coherent structures are alte red provides a promising means of improving our understanding of turbulent flows in general.

The Influence of Polymer Additives on Velocity and Temperature Fields

The Influence of Polymer Additives on Velocity and Temperature Fields Book
Author : Bernhard Gampert
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 3642826326
Language : En, Es, Fr & De

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Book Description :

The Symposium on "The Influence of Polymer Additives on Veloc ity and Temperature Fields" was proposed to the General Assem bly of the International Union of Theoretical and Applied Me chanics (IUTAM) by the "Gesellschaft fur Angewandte Mathematik und Mechanik" (GAMM). The Symposium was held under the auspices of IUTAM in association with the "Deutsche Rheologische Ge sellschaft" (DRG) with responsibility for the organization ly ing with B. Gampert (Universitat-GH-Essen). The main aim of this IUTAM Symposium was to consider the funda mental aspects of the phenomena that occur when small amounts of polymers are added to turbulent flows (turbulent drag re duction) and laminar porous media flows. In particular atten tion was devoted to - the influence of molecular parameters of the polymers and solution properties, especially the elongational viscosity, on turbulent flow and laminar porous media flow; the influence of polymers on the turbulence structure in polymer drag reduction

Multiphase Flow Metering

Multiphase Flow Metering Book
Author : Gioia Falcone,Geoffrey Hewitt,C. Alimonti
Publisher : Elsevier
Release : 2009-11-16
ISBN : 9780080558844
Language : En, Es, Fr & De

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Book Description :

Over the last two decades the development, evaluation and use of MFM systems has been a major focus for the Oil & Gas industry worldwide. Since the early 1990's, when the first commercial meters started to appear, there have been around 2,000 field applications of MFM for field allocation, production optimisation and well testing. So far, many alternative metering systems have been developed, but none of them can be referred to as generally applicable or universally accurate. Both established and novel technologies suitable to measure the flow rates of gas, oil and water in a three-phase flow are reviewed and assessed within this book. Those technologies already implemented in the various commercial meters are evaluated in terms of operational and economical advantages or shortcomings from an operator point of view. The lessons learned about the practical reliability, accuracy and use of the available technology is discussed. The book suggests where the research to develop the next generation of MFM devices will be focused in order to meet the as yet unsolved problems. The book provides a critical and independent review of the current status and future trends of MFM, supported by the authors’ strong background on multiphase flow and by practical examples. These are based on the authors’ direct experience on MFM, gained over many years of research in connection with both operators and service companies. As there are currently no books on the subject of Multiphase Flow Metering for the Oil & Gas industry, this book will fill in the gap and provide a theoretical and practical reference for professionals, academics, and students. * Written by leading scholars and industry experts of international standing * Includes strong coverage of the theoretical background, yet also provides practical examples and current developments * Provides practical reference for professionals, students and academics