Drop dynamics and dropwise condensation on textured surfaces / Sameer Khandekar, K. Muralidhar.
Khandekar, Sameer.; Muralidhar, K.
2020
QC304
Available Online

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Title Drop dynamics and dropwise condensation on textured surfaces / Sameer Khandekar, K. Muralidhar.
Author Khandekar, Sameer.
ISBN 9783030484613 (electronic book)
3030484610 (electronic book)
3030484602
9783030484606
DOI https://doi.org/10.1007/978-3-030-48461-3
https://doi.org/10.1007/978-3-030-48
Publication Details Cham : Springer, 2020.
Language English
Description 1 online resource
Item Number 10.1007/978-3-030-48461-3 doi
10.1007/978-3-030-48
Call Number QC304
Dewey Decimal Classification 536/.44
Summary This book is an expanded form of the monograph, Dropwise Condensation on Inclined Textured Surfaces, Springer, 2013, published earlier by the authors, wherein a mathematical model for dropwise condensation of pure vapor over inclined textured surfaces was presented, followed by simulations and comparison with experiments. The model factored in several details of the overall quasi-cyclic process but approximated those at the scale of individual drops. In the last five years, drop level dynamics over hydrophobic surfaces have been extensively studied. These results can now be incorporated in the dropwise condensation model. Dropwise condensation is an efficient route to heat transfer and is often encountered in major power generation applications. Drops are also formed during condensation in distillation devices that work with diverse fluids ranging from water to liquid metals. Design of such equipment requires careful understanding of the condensation cycle, starting from the birth of nuclei, followed by molecular clusters, direct growth of droplets, their coalescence, all the way to instability and fall-off of condensed drops. The model described here considers these individual steps of the condensation cycle. Additional discussions include drop shape determination under static conditions, a fundamental study of drop spreading in sessile and pendant configurations, and the details of the drop coalescence phenomena. These are subsequently incorporated in the condensation model and their consequences are examined. As the mathematical model is spread over multiple scales of length and time, a parallelization approach to simulation is presented. Special topics include three-phase contact line modeling, surface preparation techniques, fundamentals of evaporation and evaporation rates of a single liquid drop, and measurement of heat transfer coefficient during large-scale condensation of water vapor. We hope that this significantly expanded text meets the expectations of design engineers, analysts, and researchers working in areas related to phase-change phenomena and heat transfer.
Bibliography, etc. Note Includes bibliographical references and index.
Access Note Access limited to authorized users.
Added Author Muralidhar, K.
Series Mechanical engineering series (Berlin, Germany)
Available in Other Form Print version: 9783030484606
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Introduction
Intermediate steps in dropwise condensation
Mechanism of Dropwise Condensation and its Modeling
Drop Formation at the Atomic Scale
Spreading of a Single Drop on Sessile and Pendant Surfaces
Macroscopic Modeling of Dropwise Condensation
Simulation of Dropwise Condensation in a Parallel Environment
Dropwise Condensation of Water Vapor (Simulation)
Dropwise Condensation of Bismuth (Simulation)
Surface preparation Techniques
Coalescence Dynamics of Drops over a Hydrophobic Surface
Liquid Crystal Thermography of Condensing Drops
Dropwise Condensation of water vapor
Instrumentation Issues Encountered During Measurement of Heat Transfer
Evaporation of a Liquid Drops from a Textured Surface
Concluding remarks and perspectives
Future Work.

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