[PDF] Evaporation And Droplet Growth In Gaseous Media eBook

Author : N.A. Fuchs
Publisher : Elsevier
Page : 81 pages
File Size : 20,81 MB
Release : 2013-10-22
Category : Science
ISBN : 1483225631

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Evaporation and Droplet Growth in Gaseous Media deals with the evaporation of droplets of liquid in gaseous media and the reverse process of droplet growth in a medium supersaturated with the vapor of the liquid. Thediscussion is restricted to the kinetics of evaporation and growth of droplets of pure liquids (and heat transfer to the same). Comprised of three chapters, this book first examines the quasi-stationary evaporation and growth of droplets that are motionless relative to the medium and the hydrodynamic factor is absent. The Maxwell equation, the basis of the theory of evaporation of droplets in a gaseous medium, is taken into account. The influence of the Stefan flow and the concentration change at the surface on the rate of evaporation are considered, along with the evaporation of droplets in a vessel with absorbing walls and the fall in temperature of both free evaporating droplets and supported evaporating droplets. The second chapter is devoted to the quasi-stationary evaporation of droplets in a stream of gas, that is, droplets moving relative to the medium. The last chapter focuses on non-stationary evaporation and growth of droplets that either motionless or moving relative to the medium. This monograph will be of interest to students, practitioners, and researchers in inorganic and structural chemistry.

Author :
Publisher :
Page : 58 pages
File Size : 25,61 MB
Release : 1973
Category :
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A general expression for the nonsteady-state growth or evaporation of droplets in gaseous media is obtained from simultaneous solution of the differential equations for vapor diffusion and heat conduction. It is assumed that environmental conditions of temperature and vapor density vary exponentially with time, and the Clausius-Clapeyron equation for the variation of the saturation vapor density with temperature is approximated by a linear relationship. The gas temperature and vapor density at the droplet surface are assumed to be in equilibrium with the droplet surface. Analytical solutions are obtained with the aid of the Laplace transformation. (Modified author abstract).

Author : Mark L. Maiello
Publisher : CRC Press
Page : 602 pages
File Size : 30,99 MB
Release : 2010-10-18
Category : Nature
ISBN : 1420009680

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Although the field of radioactive air sampling has matured and evolved over decades, it has lacked a single resource that assimilates technical and background information on its many facets. Edited by experts and with contributions from top practitioners and researchers, Radioactive Air Sampling Methods provides authoritative guidanc

Author : E. James Davis
Publisher : Springer Science & Business Media
Page : 841 pages
File Size : 35,34 MB
Release : 2012-12-06
Category : Science
ISBN : 3642561527

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It has been thirty years since one of the authors (EJD) began a collaboration with Professor Milton Kerker at Clarkson University in Potsdam, New York using light scattering methods to study aerosol processes. The development of a relatively short-lived commercial particle levitator based on a modification of the Millikan oil drop experiment attracted their attention and led the author to the study of single droplets and solid microparticles by levitation methods. The early work on measurements of droplet evaporation rates using light scattering techniques to determine the size slowly expanded and diversified as better instrumentation was developed, and faster computers made it possible to perform Mie theory light scattering calculations with ease. Several milestones can be identified in the progress of single microparticle studies. The first is the introduction of the electrodynamic balance, which provided more robust trapping of a particle. The electrodynamic levitator, which has played an important role in atomic and molecular ion spectroscopy, leading to the Nobel Prize in Physics in 1989 shared by Wolfgang Paul of Bonn University and Hans Dehmelt of the University of Washington, was easily adapted to trap microparticles. Simultaneously, improvements in detectors for acquiring and storing light scattering data and theoretical and experimental studies of the interesting optical properties of microspheres, especially the work on morphology dependent resonances by Arthur Ashkin at the Bell Laboratories, Richard Chang, from Yale University, and Tony Campillo from the Naval Research Laboratories in Washington D. C.

Author : Longfei Chen
Publisher : CRC Press
Page : 171 pages
File Size : 44,42 MB
Release : 2024-09-20
Category : Technology & Engineering
ISBN : 1040105963

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Condensation Particle Counting Technology and Its Applications introduces the principles, key components, calibration methods, and applications of condensation particle counting systems. This book delves into the adverse effects of fine particles on human health, along with the existing detection technologies for these particles. It discusses the theories and methods of optical measurement for fine particles and elaborates on the applicable conditions for each light scattering theory, providing a theoretical foundation for detecting particle-scattered light. This book concludes with an overview of the challenges posed by ongoing climate change and future research prospects in condensation particle counting (CPC). This book is intended for industry professionals and environmental researchers specializing in particle and aerosol measurement, detection methods, and technology.

Author : Sergei Sazhin
Publisher : Springer
Page : 345 pages
File Size : 31,40 MB
Release : 2014-05-19
Category : Technology & Engineering
ISBN : 1447163869

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Providing a clear and systematic description of droplets and spray dynamic models, this book maximises reader insight into the underlying physics of the processes involved, outlines the development of new physical and mathematical models and broadens understanding of interactions between the complex physical processes which take place in sprays. Complementing approaches based on the direct application of computational fluid dynamics (CFD), Droplets and Sprays treats both theoretical and practical aspects of internal combustion engine process such as the direct injection of liquid fuel, subcritical heating and evaporation. Including case studies that illustrate the approaches relevance to automotive applications, it is also anticipated that the described models can find use in other areas such as in medicine and environmental science.