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Author: Roger A. Strehlow Publisher: ISBN: Category : Diffusion Languages : en Pages : 262
Book Description
The transport property which is most fundamentally related to forces between unlike molecules is the ordinary diffusion due to concentration gradients. Unfortunately, this property and its dependence upon temperature have not been systematically studied experimentally, with the result that the literature does not contain the data necessary to obtain good force constants for the introduction of unlike molecuels. The present work describes an experimental method for determining diffusion coefficients, based on the variation of thermal conductivity with composition in binary mixtures which is capable of being used over a wide range of temperature. Experimental results for the systems n-butane-hydrogen, sulfur hexafluoride-hydrogen, argon-hydrogen, and argon-helium are given for a temperature range from 10°C. to 140°C.
Author: Roger A. Strehlow Publisher: ISBN: Category : Diffusion Languages : en Pages : 262
Book Description
The transport property which is most fundamentally related to forces between unlike molecules is the ordinary diffusion due to concentration gradients. Unfortunately, this property and its dependence upon temperature have not been systematically studied experimentally, with the result that the literature does not contain the data necessary to obtain good force constants for the introduction of unlike molecuels. The present work describes an experimental method for determining diffusion coefficients, based on the variation of thermal conductivity with composition in binary mixtures which is capable of being used over a wide range of temperature. Experimental results for the systems n-butane-hydrogen, sulfur hexafluoride-hydrogen, argon-hydrogen, and argon-helium are given for a temperature range from 10°C. to 140°C.
Author: T. R. Marrero Publisher: ISBN: Category : Languages : en Pages : 120
Book Description
Diffusion coefficients of binary mixtures of dilute gases and comprehensively compiled, critically evaluated, and correlated by new semi-empirical expressions. There are seventy-four systems for which the data are sufficiently extensive, consistent and accurate to allow diffusion coefficients to be recommended with confidence. Deviation plots are given for most of these systems. Almost every gaseous diffusion coefficient which was experimentally determined and reported prior to 1970 can be obtained from the annotated bibliography and table of gas pairs. A detailed analysis of experimental methods is given, and intercomparison of their results helps establish reliability limits for the data, which depend strongly on temperature. Direct measurements are supplemented by calculations based on knowledge of intermolecular forces derived from independent sources-molecular beam scattering for high temperatures, and London dispersion constants for low temperatures. In addition, diffusion coefficients for several mixtures are obtained from experimental data on mixture viscosities and thermal diffusion factors. Combination of all these results gives diffusion coefficients over a very extensive temperature range from very low temperatures to 10,000 K. All data are corrected for composition dependence and for quantum effects. New semi-empirical equations are derived for making such corrections easily. (Author).
Author: A. N. Berezhnoi Publisher: Begell House Publishers ISBN: 9781567000788 Category : Science Languages : en Pages : 200
Book Description
In this book, the authors describe experimental methods of measuring binary diffusion coefficients of liquid vapors in gases. Experimental data on binary diffusion coefficients are given over a wide range of temperature and pressure ranges, and reflect the up-to-date results. Main sections of the book cover the experimental measurement of binary diffusion coefficients, results of experimental measurements at atmospheric pressure and various temperatures, and results of experimental measurements at various pressures and temperatures.
Author: Aloke Paul Publisher: Springer ISBN: 331907461X Category : Science Languages : en Pages : 543
Book Description
In this book basic and some more advanced thermodynamics and phase as well as stability diagrams relevant for diffusion studies are introduced. Following, Fick’s laws of diffusion, atomic mechanisms, interdiffusion, intrinsic diffusion, tracer diffusion and the Kirkendall effect are discussed. Short circuit diffusion is explained in detail with an emphasis on grain boundary diffusion. Recent advances in the area of interdiffusion will be introduced. Interdiffusion in multi-component systems is also explained. Many practical examples will be given, such that researches working in this area can learn the practical evaluation of various diffusion parameters from experimental results. Large number of illustrations and experimental results are used to explain the subject. This book will be appealing for students, academicians, engineers and researchers in academic institutions, industry research and development laboratories.
Author: John Crank Publisher: Oxford University Press ISBN: 9780198534112 Category : Mathematics Languages : en Pages : 428
Book Description
Though it incorporates much new material, this new edition preserves the general character of the book in providing a collection of solutions of the equations of diffusion and describing how these solutions may be obtained.
Author: Roger A. Strehlow
Author: Roger A. Strehlow
Author: T. R. Marrero
Author: V.L. Gelezunas
Author: S. Weissman
Author: Charles Edward Baker
Author: 
Author: A. N. Berezhnoi
Author: Aloke Paul
Author: Roger A. Strehlow
Author: John Crank