Authors:
- Fundamentals of equilibrium drop shapes, drop spreading, and coalescence are discussed
- A dropwise condensation model capable of predicting the instantaneous drop size distribution over a textured substrate and its evolution in time is developed
- Drop level details are visible in the outcome of the condensation model
- Local as well as spatio-temporally averaged heat transfer rates and wall shear stress for the condensation cycle are discussed with surface subcooling, orientation, and surface texture as parameters
- Condensation patterns in water are compared with those formed during condensation of bismuth vapor
- A state-of-the-art on surface preparation techniques is provided. Experimental methods for measurement of heat transfer coefficient, not only on the substrate level but also on the level of individual condensing droplets are discussed
Part of the book series: Mechanical Engineering Series (MES)
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Table of contents (16 chapters)
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Front Matter
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Statics, Spreading, Coalescence
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Front Matter
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Modeling Dropwise Condensation
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Front Matter
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Dropwise Condensation Experiments
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Front Matter
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About this book
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.
Authors and Affiliations
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Department of Mechanical Engineering, Indian Institute of Technology Kanpur, Kanpur, India
Sameer Khandekar, K. Muralidhar
About the authors
Sameer Khandekar is a Professor in the Department of Mechanical Engineering at Indian Institute of Technology Kanpur, Kanpur (UP) India. K. Muralidhar is a Professor in the Department of Mechanical Engineering at theIndian Institute of Technology Kanpur, Kanpur (UP) India.
Bibliographic Information
Book Title: Drop Dynamics and Dropwise Condensation on Textured Surfaces
Authors: Sameer Khandekar, K. Muralidhar
Series Title: Mechanical Engineering Series
DOI: https://doi.org/10.1007/978-3-030-48461-3
Publisher: Springer Cham
eBook Packages: Engineering, Engineering (R0)
Copyright Information: Springer Nature Switzerland AG 2020
Hardcover ISBN: 978-3-030-48460-6Published: 12 September 2020
Softcover ISBN: 978-3-030-48463-7Published: 13 September 2021
eBook ISBN: 978-3-030-48461-3Published: 11 September 2020
Series ISSN: 0941-5122
Series E-ISSN: 2192-063X
Edition Number: 1
Number of Pages: XXIV, 450
Number of Illustrations: 139 b/w illustrations, 60 illustrations in colour
Topics: Engineering Thermodynamics, Heat and Mass Transfer, Thermodynamics, Engineering Fluid Dynamics, Surface and Interface Science, Thin Films, Quantum Gases and Condensates