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Author : Yue Suo
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (144 download)
Download or read book Unsteady Spreading of Newtonian Fluids and Dynamic Wetting of Shear-thinning Fluids written by Yue Suo and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Victor M. Starov
Publisher : CRC Press
ISBN 13 : 0429013744
Total Pages : 472 pages
Book Rating : 4.4/5 (29 download)
Download or read book Wetting and Spreading Dynamics, Second Edition written by Victor M. Starov and published by CRC Press. This book was released on 2019-07-02 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetting and Spreading Dynamics explains how surface forces acting at the three-phase contact line determine equilibrium, hysteresis contact angles, and other equilibrium and kinetics features of liquids when in contact with solids or with other immiscible liquids. It examines the interaction of surface forces, capillary forces, and properties of the transition zone between the bulk liquid and solid substrate. Significantly revised and updated, the Second Edition features new chapters that cover spreading of non-Newtonian liquids over porous substrates, hysteresis of contact angles on smooth homogeneous substrates, equilibrium and hysteresis contact angles on deformable substrates, and kinetics of simultaneous spreading and evaporation. Drawing together theory and experimental data while presenting over 150 figures to illustrate the concepts, Wetting and Spreading Dynamics, Second Edition is a valuable resource written for both newcomers and experienced researchers.
Author : Kash L. Mittal
Publisher : CRC Press
ISBN 13 : 1466562382
Total Pages : 562 pages
Book Rating : 4.4/5 (665 download)
Download or read book Contact Angle, Wettability and Adhesion written by Kash L. Mittal and published by CRC Press. This book was released on 2014-07-30 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume documents the proceedings of the Second International Symposium on Contact Angle, Wettability and Adhesion held in Newark, NJ, June 21-23, 2000. Since the first symposium, held in 1992, there had been tremendous research activity on many ramifications of wettability phenomena.This volume contains a total of 33 papers, which were all pro
Author : Gitanjali K. Seevaratnam
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (144 download)
Download or read book Dynamic Wetting of Non-Newtonian Fluids written by Gitanjali K. Seevaratnam and published by . This book was released on 2006 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 440 pages
Book Rating : 4.3/5 (91 download)
Download or read book Corning Research written by and published by . This book was released on 2000 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yingjie Li
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (15 download)
Download or read book Impact Dynamics of Newtonian and Non-Newtonian Fluid Droplets on Super Hydrophobic Substrate written by Yingjie Li and published by . This book was released on 2016 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional rheological methods such as viscometry to characterize linear and nonlinear viscosity behavior requires an excessive amount of sample liquid, which is practically impractical due to the time and cost constraints, for instances, in blood, and other scarce and expensive bio-fluids. There is an urge for a handy tool to quickly evaluate the intrinsic properties of a liquid. In this thesis, droplet of Newtonian (e.g. water) and non-Newtonian liquids (e.g. shear thinning blood, shear thickening starch solution) with a desired dimension is released by a pipette from a vertical distance. Gravitational attraction gives rise to an impact velocity, and the droplet hits a rigid hydrophobic surface with a liquid-substrate contact angle of 150o. An experimental set up equipped with a manual pipette, high speed camera, and substrate holder etc. is constructed to capture the geometrical change over the sequential the impact-spread-recoil-rebound process. Upon impact, the droplet turns into an expanding pancake geometry with coronal spires developing over time. In extreme conditions of high impact velocity, splashing or fragmentation is observed. The video records are analyzed in terms of the classical dimensionless Weber number (We) which comprises impact velocity and surface tension. Other measurements are made: (i) duration of droplet on the substrate, and the change in contact area at droplet-substrate interface, prior to rebounce, (ii) critical droplet dimension and impact velocity leading to fragmentation, (iii) jet formation at rebounce, (iv) maximum number of spires, and (v) wavelength of radial Rayleigh wave. Comparison between Newtonian and non-Newtonian liquids are made, and non-linear behaviors are observed. Weber number is shown to be insufficient in describing spire formations. Non-linear viscosity, playing an indispensable role in droplet geometric deformation, must be incorporated in droplet dynamics.
Author : R. S. Burdon
Publisher : Cambridge University Press
ISBN 13 : 1107666570
Total Pages : 113 pages
Book Rating : 4.1/5 (76 download)
Download or read book Surface Tension and the Spreading of Liquids written by R. S. Burdon and published by Cambridge University Press. This book was released on 2014-06-12 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1949, this book assesses the phenomena of surface tension and spreading for various liquids.
Author : P.M. Schweizer
Publisher : Springer Science & Business Media
ISBN 13 : 9401153426
Total Pages : 794 pages
Book Rating : 4.4/5 (11 download)
Download or read book Liquid Film Coating written by P.M. Schweizer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 794 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multi-authored volume provides a comprehensive and in-depth account of the highly interdisciplinary science and technology of liquid film coating. The book covers fundamental principles from a wide range of scientific disciplines, including fluid mechanics aand transport phenomena, capillary hydrodynamics, surface and colloid science. The authors, all acknowledged eperts in their fields, represent a balance between industrial and academic points of view. Throughout the text, many case studies illustrate how scientific principles together with advanced experimental and theoretical methods are applied to develop and optimize manufacturing processes of eve increasing sophiatication and efficiency. In the first part of the book, the authors systematically recount the underlying physical principles and important material properties. The second part of the book gives a comprehensive overview of the most advanced experimental, mathematical and computational methods available today to investigate coating processes. The third part provides an overview and critical literature review for all major classes of liquid film coating processes of industrial importance.
Author : Bryan E. Richards
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)
Download or read book Measurement of Unsteady Fluid Dynamic Phenomena written by Bryan E. Richards and published by . This book was released on 1977 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dennis A. Siginer
Publisher :
ISBN 13 : 9780791814390
Total Pages : 188 pages
Book Rating : 4.8/5 (143 download)
Download or read book Developments in Non-Newtonian Flows 1994 written by Dennis A. Siginer and published by . This book was released on 1994 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Source Wikipedia
Publisher : University-Press.org
ISBN 13 : 9781230484495
Total Pages : 56 pages
Book Rating : 4.4/5 (844 download)
Download or read book Non-Newtonian Fluids written by Source Wikipedia and published by University-Press.org. This book was released on 2013-09 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 54. Chapters: Silly Putty, Non-Newtonian fluid, Ketchup, Gravy, Finite strain theory, Deformation, Viscoelasticity, Neo-Hookean solid, Gunge, Arruda-Boyce model, Mooney-Rivlin solid, Bingham plastic, Gent, Herschel-Bulkley fluid, Memory foam, Dissipative particle dynamics, Thixotropy, Maxwell material, Power-law fluid, Dilatant, Food rheology, Standard Linear Solid model, Kelvin-Voigt material, Upper Convected Maxwell model, Thread-locking fluid, Complex fluids, Temperature dependence of liquid viscosity, D3o, Dynamic modulus, Upper convected time derivative, Rheopecty, Shear thinning, Palierne equation, Polynomial, Wagner model, Weissenberg number, Generalized Maxwell model, Carreau fluid, Generalized Newtonian fluid, Cross fluid, Trouton's ratio, First-order fluid, Second-order fluid, Burgers material.
Author : Şule Celasun
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (115 download)
Download or read book Particle Settling in a Non-Newtonian Fluid Medium Processed by Using the CEF Model written by Şule Celasun and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, the settling of small particles in a non-Newtonian fluid medium is considered. The simulation of this problem according to the fluid mechanics principles may be realized by the flow of a non-Newtonian fluid around a sphere falling along the centerline of a cylindrical tube. The knowledge of the rate of settling of particles in practice is particularly significant in determining the shelf life of materials such as foodstuffs, cleaning materials and many others. Thus, this problem has great importance in many natural and physical processes and in a large number of industrial applications such as chemical, genetic and biomedical engineering operations. The majority of the theoretical, experimental and numerical studies available in the literature deal with Newtonian fluids. Conversely, for non-Newtonian fluids the problem is considerably more complex. It is well-recognized that extensional behaviour in non-Newtonian fluids plays a major role in complex flows. Most non-Newtonian fluids such as polymeric solutions and melts exhibit shear-thinning behaviour. In this study it is aimed to determine the equations governing this process and some important conclusions about the properties of polymeric liquids related to their viscoelastic constitution are drawn. Effectively, it is found that for polymeric liquids, the elastic behaviour characterized by the normal stress coefficients, implies relatively increased normal stresses with respect to the generalized Newtonian fluids, whereas the shear stresses tend to decrease, thus changing somewhat the category of the flow from shear-flow into extensional flow in a small rate. Hence, the viscoelastic property of the polymeric liquids must be stressed by their constitutive equation choice, which led us to the CEF model.
Author : R.P. Chhabra
Publisher : CRC Press
ISBN 13 : 1420015389
Total Pages : 801 pages
Book Rating : 4.4/5 (2 download)
Download or read book Bubbles, Drops, and Particles in Non-Newtonian Fluids written by R.P. Chhabra and published by CRC Press. This book was released on 2006-07-25 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bubbles, Drops, and Particles in Non-Newtonian Fluids, Second Edition continues to provide thorough coverage of the scientific foundations and the latest advances in particle motion in non-Newtonian media. The book demonstrates how dynamic behavior of single particles can yield useful information for modeling transport processes in complex multipha
Author : David Brutin
Publisher : Academic Press
ISBN 13 : 0128008083
Total Pages : 464 pages
Book Rating : 4.1/5 (28 download)
Download or read book Droplet Wetting and Evaporation written by David Brutin and published by Academic Press. This book was released on 2015-05-11 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: Droplet Wetting and Evaporation provides engineers, students, and researchers with the first comprehensive guide to the theory and applications of droplet wetting and evaporation. Beginning with a relevant theoretical background, the book moves on to consider specific aspects, including heat transfer, flow instabilities, and the drying of complex fluid droplets. Each chapter covers the principles of the subject, addressing corresponding practical issues and problems. The text is ideal for a broad range of domains, from aerospace and materials, to biomedical applications, comprehensively relaying the challenges and approaches from the different communities leading the way in droplet research and development. Provides a broad, cross-subject coverage of theory and application that is ideal for engineers, students and researchers who need to follow all major developments in this interdisciplinary field Includes comprehensive discussions of heat transfer, flow instabilities, and the drying of complex fluid droplets Begins with an accessible summary of fundamental theory before moving on to specific areas such as heat transfer, flow instabilities, and the drying of complex fluid droplets
Author : Yuli Wei
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (144 download)
Download or read book Dynamic Wetting of Viscous and Viscoelastic Fluids written by Yuli Wei and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael A. Chen
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (93 download)
Download or read book Experiments in Fluid Spreading in the Partial Wetting Regime written by Michael A. Chen and published by . This book was released on 2014 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The spread of a fluid on a flat surface has been the subject of intense research for a number of decades, having importance in surface treatment technologies, porous media flow, and common naturally ocurring phenomena. In the complete wetting case, a fluid will spread until it can cover the entire surface with a thin film of molecular thickness; the dynamics of these fluids are well understood. In the partial wetting case, the fluid first spreads and then stops, forming a puddle. Research on partial wetting flows has revealed that the macroscopic behavior is impacted by microscopic behavior, but there is no broadly accepted model that connects these two regions. Some experimental data exist for a small volume of partial wetting fluid spreading, but there is a distinct gap in data for larger volumes. Here, we first review currently established understanding of the spreading problem for the complete wetting and partial wetting cases. We then present the results of laboratory experiments for large volume fluid spreading in the partial wetting regime. We observe an early time spreading regime, which is followed by a relaxation to steady state. Comparisons to similarly large volumes of a complete wetting fluid spreading show differences even in the early time behavior. We compare the results of these experiments with a macroscopic model in development and find agreement between experiment and model, with the model revealing an early spreading regime of the form A ~ t1/4. The results of these experiments and model of simple fluid spreading lay the foundation for future work investigating more complex multiphase flow phenomena in porous media under the partial wetting regime.
Author : Travis William Walker
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (855 download)
Download or read book Exploiting Multiphase Interactions in Fluid Mechanics written by Travis William Walker and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and subsequent removal of highly elastic solutions from surfaces has allowed industry to effectively remove particulate contaminants from high-grade silicon. The advantage of this continuous process over conventional techniques is the noninvasive removal of the particulates, while generating limited nonhazardous aqueous waste. Our group investigated the use of polymeric liquids to effectively eliminate particles without damaging the delicate surfaces. To investigate this removal, we studied two different flow types (syphoning and rinsing) of various rheological fluids to understand the governing physics that allow for removal. A significant effort was necessary to gain an understanding of the rinsing flow type. An impinging jet of water was used to rinse coating fluids of varying rheology to investigate the flow structures of the resulting hydraulic jumps qualitatively and quantitatively. We observed the interactions of the two-fluid system during the transient growth of the flow profile, finding rheological dependencies on the magnitude, velocity, and topography. The presence of shear thinning of the coating liquid influenced the overall velocity of the radial growth, while determining the geometry of the driving front. The dependence of these results on the local rheology was supported by experiments on Newtonian fluids of various shear viscosities. The presence of elasticity was seen to dampen the disturbances of the hydraulic jump, influence the overall jump height, and vary the radial growth of the jump. These observations were supported by experiments of Boger fluids with varying elasticity. To better understand the flow conditions necessary for particle removal, we present a simple theoretical model showing that the presence of large elongational viscosities are exploited by local flow gradients. Specifically, we simplify the complicated siphoning flow field near the substrate to a radially dependent shear flow. The radial position where the local shear rate becomes leading order with the characteristic polymer relaxation time is shown to correlate well with the onset of removal of the particulates from the surface. This correlation is attributed to the substantial polymer contributions to the stress field that result. Studying the interaction of inhomogeneous droplets and jets that are miscible with their surroundings, such as glycerol drops falling into water, was a natural extension of the rinsing flow work. This basic flow problem is central to numerous industrial and natural processes, such as mixing of cleansing liquids and creating biocompatible implants for drug delivery. Although the interactions of immiscible drops and jets show similarities to miscible systems, the small, transient interfacial tension associated with miscible systems create distinct outcomes such as intricate droplet shapes, break-up resistant jets, and spreading sessile drops. Experiments were conducted to understand several basic multiphase flow problems involving miscible liquids including the free-surface pendant drops or "sagging blobs" resulting from drop impaction. Using high-speed imaging of the morphological evolution of the flows, we show that these processes are controlled by interfacial tensions. Miscible jets, which allow the creation of fibers and tubular shapes from inelastic materials that are otherwise difficult to process due to capillary breakup were also investigated. This work shows that stabilization from the diminishing interfacial tensions of the miscible jets allow various elongated morphologies to be formed. When combined with a mechanism to freeze these fibers, highly oriented materials, such as anisotropic collagen fibers used as scaffolds for regeneration of anisotropic tissues, can be created.
