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ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Study of temperature and vapor bubble's behavior in rapid transient explosive boiling

Get access (open in a dialog) DOI: 10.1615/IHTC12.2300
6 pages

Sinopsis

Thin platinum film immersed in an acetone liquid pool and heated by pulsed laser was adopted to study the temperature variation and bubble behavior when rapid transient explosive boiling takes place. Temperature measurement was performed without mutual disturbances between heating and measuring signals. The temperature measuring response time is less than 1µs. It was found that the temperature rises to a saturated temperature very close to the limit of superheat according to kinetic nucleation theory and homogeneous nucleation occurs when laser power is high enough. The behavior of vapor bubbles from 1µs to 900µs after the onset of laser heating was photographed. Series of images of mushroom-like vapor bubbles in the rapid transient explosive boiling which showed the big difference from those in normal boiling.