Springer Theses

Buoyancy-Thermocapillary Convection of Volatile Fluids in Confined and Sealed Geometries

Authors: Qin, Tongran

  • Nominated by the Georgia Institute of Technology as an outstanding PhD thesis
  • Presents the first systematic description of the two-phase flow problem based entirely on a physical model of both the liquid and the gas phase
  • Makes a number of radical contributions to our fundamental understanding of convection in volatile fluids and modeling of evaporative cooling devices
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eBook $99.00
price for USA (gross)
  • ISBN 978-3-319-61331-4
  • Digitally watermarked, DRM-free
  • Included format: PDF, EPUB
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $129.00
price for USA
  • ISBN 978-3-319-61330-7
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
About this book

This thesis represents the first systematic description of the two-phase flow problem. Two-phase flows of volatile fluids in confined geometries driven by an applied temperature gradient play an important role in a range of applications, including thermal management, such as heat pipes, thermosyphons, capillary pumped loops and other evaporative cooling devices.  Previously, this problem has been addressed using a piecemeal approach that relied heavily on correlations and unproven assumptions, and the science and technology behind heat pipes have barely evolved in recent decades. The model introduced in this thesis, however, presents a comprehensive physically based description of both the liquid and the gas phase.

The model has been implemented numerically and successfully validated against the available experimental data, and the numerical results are used to determine the key physical processes that control the heat and mass flow and describe the flow stability. One of the key contributions of this thesis work is the description of the role of noncondensables, such as air, on transport. In particular, it is shown that many of the assumptions used by current engineering models of evaporative cooling devices are based on experiments conducted at atmospheric pressures, and these assumptions break down partially or completely when most of the noncondensables are removed, requiring a new modeling approach presented in the thesis.

Moreover, Numerical solutions are used to motivate and justify a simplified analytical description of transport in both the liquid and the gas layer, which can be used to describe flow stability and determine the critical Marangoni number and wavelength describing the onset of the convective pattern. As a result, the results presented in the thesis should be of interest both to engineers working in heat transfer and researchers interested in fluid dynamics and pattern formation.

About the authors

Dr Tongran Qin was awarded a PhD degree by Georgia Institute of Technology in 2015.




Table of contents (7 chapters)

Buy this book

eBook $99.00
price for USA (gross)
  • ISBN 978-3-319-61331-4
  • Digitally watermarked, DRM-free
  • Included format: PDF, EPUB
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $129.00
price for USA
  • ISBN 978-3-319-61330-7
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
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Bibliographic Information

Bibliographic Information
Book Title
Buoyancy-Thermocapillary Convection of Volatile Fluids in Confined and Sealed Geometries
Authors
Series Title
Springer Theses
Copyright
2017
Publisher
Springer International Publishing
Copyright Holder
Springer International Publishing AG
eBook ISBN
978-3-319-61331-4
DOI
10.1007/978-3-319-61331-4
Hardcover ISBN
978-3-319-61330-7
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XVIII, 209
Number of Illustrations and Tables
34 b/w illustrations, 29 illustrations in colour
Topics