An experimental study of evaporative cooling from liquid droplets impinging on a hot surface
Name
62785833-MIT.pdf
Description
Full printable version
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2.65 MB
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Checksum (MD5)
527428690b4374d4fd622f8349f573b0
Author(s)
Koveal, Catherine Helene
Advisor(s)
Anette Hosoi.
Date Issued
2005
Publisher
Massachusetts Institute of Technology
Abstract
We have performed a series of experiments to characterize the different regimes observed in drop impacts during evaporative cooling of heated surfaces. We found four regimes which were named splashing, fizzing, flat film, and marbling based on the dynamic properties of the drop impact. We found that the emergence of these regimes is primarily controlled by the Jacob number, a dimensionless group describing the ratio of sensible to latent energy absorbed during liquid-vapor phase change. Using our classification scheme, we can predict a range of useful Jacob numbers to use in the cooling of electronic components. From these Jacob numbers, we can extract the material properties of a fluid required to cool a given system.
Description
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2005.
Includes bibliographical references (p. 41-42).
Subjects
Mechanical Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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