The Effect of Drop Viscoelasticity on the Drainage of Newtonian Liquid Films
An experimental study of the deformation and drainage of a Newtonian liquid film trapped between viscoelastic drops is performed in the case of gentle collisions (typically coalescing). The effect of the elastic stress in the drop phase is investigated. A
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Series Editors: The Rectors Manuel Garcia Velarde - Madrid Mahir Sayir - Zurich Wilhelm Schneider - Wien
The Secretary General Bernhard Schrefler - Padua
Former Secretary General Giovanni Bianchi - Milan
Executive Editor Carlo Tasso- Udine
The series presents lecture notes, monographs, edited works and proceedings in the field of Mechanics, Engineering, Computer Science and Applied Mathematics. Purpose of the series is to make known in the international scientific and technical community results obtained in some of the activities organized by CISM, the International Centre for Mechanical Sciences.
INTERNATIONAL CENTRE FOR MECHANICAL SCIENCES COURSES AND LECTURES - No. 456
DROP-SURFACE INTERACTIONS
EDITEDBY MARTINREIN GERMAN AEROSPACE CENTER
Springer-Verlag Wien GmbH
This volume contains 157 illustrations
This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concemed specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. © 2002 by Springer-Verlag Wien Originally published by CISM, Udine in 2002. SPIN 10887789
In order to make this volume available as economically and as rapidly as possible the authors' typescripts have been reproduced in their original forms. This method unfortunately has its typographicallimitations butit is hoped that they in no way distract the reader.
ISBN 978-3-7091-2594-6 (eBook) ISBN 978-3-211-83692-7 DOI 10.1007/978-3-7091-2594-6
PREFACE
Drop-surface interactions comprise a manifold of physical processes. Related aspects have been studied both on their own, and in the context of their importance to a wide variety of technical applications. The purpose of the present book is to provide a comprehensive picture of the many interesting features of drop-surface interactions and to give new insights into relevant physical mechamsms.
This book is based on lectures presented during a course on drop-surface interactions at the International Centre of Mechanical Seiences in Udine. The content of the chapters is multidisciplinary, ranging from fluid mechanics and thermal sciences to physico-chemical processes and numerical analysis. Initially, a systematic survey of free-surface flow phenomena characteristic of drop impact on solid and liquid surfaces is given and fundamental physical mechanisms are explained. Throughout the book the importance of scaling and dimensionless quantities is emphasized. Wave processes occurring in the liquid during high-velocity drop impact are the subject of a chapter on the impact of compressible liquids. Analytical tools are presented for calculating the formation and propagation of shock and expansion waves within the drop. The role played by the liquid free surface is especially illustrated. Physico-chemical fundamentals relating to a forced spreading of complex solutions are provided at some depth in another chapter. The importance of capillarity, surface active agents, dynamic surface pro
