Self-propelled motion of film boiling droplets on ratchet-like surfaces
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Date
2003-06
Authors
Melling, Laura
Journal Title
Journal ISSN
Volume Title
Publisher
University of Oregon
Abstract
We have observed a novel phenomenon by which asymmetrically structured surfaces can be used to direct the motion of film boiling droplets without applying an external force to the system. Droplets placed on such a surface move in a preferred direction, and under common conditions accelerate in that direction. In this thesis, we present a phenomenological description of the observed behavior, and develop a mathematical model for the motion of droplets on ratchet and non-ratchet surfaces. Using this model, we show that asymmetry is a requisite of the observed behavior. We also show that surface and droplet properties influence the resulting acceleration.
Description
vii, 57 p. ; ill.
A print copy of this title is available through the UO Libraries under the call number: SCA Archiv Melling 2003