Hydrodynamics Of Dilute Rouse Polymer Solutions Under Flow
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Hydrodynamics Of Dilute Rouse Polymer Solutions Under Flow
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Author : Shi-Qing Wang
language : en
Publisher:
Release Date : 1987
Hydrodynamics Of Dilute Rouse Polymer Solutions Under Flow written by Shi-Qing Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Hydrodynamics categories.
Studies In Rheology And Hydrodynamics Of Dilute Polymer Solutions
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Author : Michael Poreh
language : en
Publisher:
Release Date : 1969
Studies In Rheology And Hydrodynamics Of Dilute Polymer Solutions written by Michael Poreh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with Plasticity categories.
Five studies are presented in this publication: A comparison between the behaviour of polymer solutions and flow characteristics of linear elastico-viscous fluid models. The study shows that no linear model can predict consistently all the observed non-Newtonian phenomena of polymer solutions; Turbulent flow of dilute polymer solutions through an annulus. Experimental and theoretical results are presented; Measurements of the dynamic response of flowing polymer solutions with a vibrating torsional quartz crystal are presented. The dynamic elastico-viscous response is found to be independent of the flow characteristics and shear rates; Drag reduction in developing boundary layers by injection of polymer solutions. Reduction of local friction coefficients is of the order of 65 percent, however, energy losses in the injection region decrease the total drag reduction efficiency. Effect of the injection concentration and discharge, width of slot and mean stream velocity are found; Drag reduction and degradation tests of several polymer solutions are presented. (Author).
Drag Reduction By Dilute Polymer Solutions In Turbulent Flow
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Author : Ralph C. Little
language : en
Publisher:
Release Date : 1967
Drag Reduction By Dilute Polymer Solutions In Turbulent Flow written by Ralph C. Little and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.
The mechanism by which water-soluble polymers reduce hydrodynamic drag on solid surfaces was investigated by measurements of flow birefringence and of turbulent flow in pipes. Flow birefringence and flow field orientation of Polyox polymers in the molecular weight range from 200,000 to 6,000,000 showed that Polyox macromolecules continue to deform with increasing velocity gradient even after alignment with the flow field (at gradients in excess of 2000/sec). All solutions used were found to be Newtonian, with the exception of the AcrysolA-5 solutions. The flow data for Polyox solutions in a Pyrex pipe were examined in terms of Meyer's fluid property parameter and Elata's relaxation time hypothesis for the initiation of drag reduction. It was found that drag reduction in the Pyrex pipe was initiated at a value of the order of one-fifth that predicted by Elata's theory. Moreover, added salt (the solution being 0.3 molar in K2SO4) had no effect on the flow of Polyox Coagulant solutions even though the intrinsic viscosity (upon which Rouse relaxation times depend) was cut to slightly more than one-third of its value in the pure solvent. The unusually high values of Meyer's fluid property parameter observed at low concentrations suggests that adsorption on the Pyrex pipe walls may be playing a role in drag reduction. (Author).
The Theory Of Polymer Dynamics
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Author : Masao Doi
language : en
Publisher: Oxford University Press
Release Date : 1988
The Theory Of Polymer Dynamics written by Masao Doi and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Science categories.
This book provides a comprehensive account of the modern theory for the dynamical properties of polymer solutions. The theory has undergone dramatic evolution over the last two decades due to the introduction of new methods and concepts that have extended the frontier of theory from dilute solutions in which polymers move independently to concentrated solutions where many polymers converge. Among the properties examined are viscoelasticity, diffusion, dynamic light scattering, and electric birefringence. Nonlinear viscoelasticity is discussed in detail on the basis of molecular dynamical models. The book bridges the gap between classical theory and new developments, creating a consistent picture of polymer solution dynamics over the entire concentration range.
Brownian Dynamics Simulations Of Dilute Polymer Solutions With Complex Hydrodynamics
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Author : Chih-Chen Hsieh
language : en
Publisher:
Release Date : 2005
Brownian Dynamics Simulations Of Dilute Polymer Solutions With Complex Hydrodynamics written by Chih-Chen Hsieh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with categories.
Dynamics Of Flowing Polymer Solutions Under Confinement
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Author : Hongbo Ma
language : en
Publisher:
Release Date : 2007
Dynamics Of Flowing Polymer Solutions Under Confinement written by Hongbo Ma and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with categories.
Thermodynamics Of Fluids Under Flow
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Author : D. Jou
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Thermodynamics Of Fluids Under Flow written by D. Jou and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
Based on the authors’ successful theory for extended irreversible thermodynamics, the book analyzes the thermodynamic aspects of several phenomena induced by the flow in fluid systems.
Constitutive Equations For Polymer Melts And Solutions
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Author : Ronald G. Larson
language : en
Publisher: Butterworth-Heinemann
Release Date : 2013-10-22
Constitutive Equations For Polymer Melts And Solutions written by Ronald G. Larson and has been published by Butterworth-Heinemann this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.
Constitutive Equations for Polymer Melts and Solutions presents a description of important constitutive equations for stress and birefringence in polymer melts, as well as in dilute and concentrated solutions of flexible and rigid polymers, and in liquid crystalline materials. The book serves as an introduction and guide to constitutive equations, and to molecular and phenomenological theories of polymer motion and flow. The chapters in the text discuss topics on the flow phenomena commonly associated with viscoelasticity; fundamental elementary models for understanding the rheology of melts, solutions of flexible polymers, and advanced constitutive equations; melts and concentrated solutions of flexible polymer; and the rheological properties of real liquid crystal polymers. Chemical engineers and physicists will find the text very useful.
Thermodynamics Of Flowing Systems
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Author : Antony N. Beris
language : en
Publisher: Oxford University Press
Release Date : 1994-05-26
Thermodynamics Of Flowing Systems written by Antony N. Beris and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994-05-26 with Science categories.
This much-needed monograph presents a systematic, step-by-step approach to the continuum modeling of flow phenomena exhibited within materials endowed with a complex internal microstructure, such as polymers and liquid crystals. By combining the principles of Hamiltonian mechanics with those of irreversible thermodynamics, Antony N. Beris and Brian J. Edwards, renowned authorities on the subject, expertly describe the complex interplay between conservative and dissipative processes. Throughout the book, the authors emphasize the evaluation of the free energy--largely based on ideas from statistical mechanics--and how to fit the values of the phenomenological parameters against those of microscopic models. With Thermodynamics of Flowing Systems in hand, mathematicians, engineers, and physicists involved with the theoretical study of flow behavior in structurally complex media now have a superb, self-contained theoretical framework on which to base their modeling efforts.
Free Liquid Jets And Films
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Author : Alexander L. Yarin
language : en
Publisher: Chapman & Hall/CRC
Release Date : 1993
Free Liquid Jets And Films written by Alexander L. Yarin and has been published by Chapman & Hall/CRC this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Mathematics categories.
An examination of the hydrodynamics of free liquid jets and the films of viscous and rheologically complex (in particular, polymeric) liquids. Offering a unique and comprehensive coverage of an important topic, this volume will be invaluable for all those involved in applied mathematics, computational fluid mechanics, hydrodynamics, rheology, applied physics, as well as chemical and mechanical engineering.