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Explosive Boiling of Liquid Droplets at Their Superheat Limits

[+] Author Affiliations
Hong-Chul Park, Gi-Taek Byun, Ho-Young Kwak

Chung-Ang University, Seoul, Korea

Sung-Kap Cho

Yuhan College, Bucheon City, Korea

Paper No. IMECE2003-41327, pp. 27-37; 11 pages
doi:10.1115/IMECE2003-41327
From:
  • ASME 2003 International Mechanical Engineering Congress and Exposition
  • Heat Transfer, Volume 4
  • Washington, DC, USA, November 15–21, 2003
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 0-7918-3718-1 | eISBN: 0-7918-4663-6, 0-7918-4664-4, 0-7918-4665-2
  • Copyright © 2003 by ASME

abstract

The maximum temperature limit at which liquid boils explosively is called the superheat limit of liquids. Using the explosion technique, the superheat limit of several hydrocarbons and their mixtures was measured. The dynamic behavior of the bubble formed from the fully evaporated droplet at its superheat limit was investigated by measuring the far field pressure signal from the bubble and by visualizing its behavior. The evaporation process of a droplet and the evolution of the bubble from the evaporated droplet were also studied theoretically by using an appropriate bubble nucleation and dynamics model. It was found that the superheat limit of liquids could be accurately predicted when correct vapor-liquid equilibrium data for the liquids were provided. Also, the oscillation behavior of the bubble from the evaporated droplet was found to be governed by the thermal damping due to the finite heat transfer through the bubble wall.

Copyright © 2003 by ASME
Topics: Boiling , Explosives

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