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The Influence of Ratchets Dimension and Shape on the Motion of Leidenfrost Droplet

[+] Author Affiliations
Jeong Tae Ok, Bahador Farshchian, Daniel Sang-Won Park, Sunggook Park

Louisiana State University, Baton Rouge, LA

Paper No. IMECE2010-37986, pp. 725-728; 4 pages
doi:10.1115/IMECE2010-37986
From:
  • ASME 2010 International Mechanical Engineering Congress and Exposition
  • Volume 10: Micro and Nano Systems
  • Vancouver, British Columbia, Canada, November 12–18, 2010
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4447-2
  • Copyright © 2010 by ASME

abstract

The influence of ratchet aspect ratio and the shape of ratchet ridges on the motion of film boiling water droplet were investigated. Continuous rebounding behavior of the droplet was observed on micro ratchets with lower depths and round ridges. The residence time and flying time of rebounding droplets are independent of surface temperature. The terminal velocity increases but the number of rebounds decreases as the surface temperature increases in the range of 192–248°C.

Copyright © 2010 by ASME
Topics: Motion , Dimensions , Shapes

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