"Universality of oscillating boiling in Leidenfrost transition" by Prof.Tran

Date :      March 24^th (Fri), 2017
Time:      3:00pm – 4:00pm
Venue:    C016 (Lab1, Level C)
Speaker:  Prof. Tuan Tran  (Nanyang Technological University)

Title: 
Universality of oscillating boiling in Leidenfrost transition                                   

Abstract:
The Leidenfrost transition leads a boiling system to the boiling crisis, a state in which the liquid loses contact with the heated surface due to excessive vapor generation. Here, using experiments of liquid droplets boiling on a heated surface, we report a new phenomenon, termed oscillating boiling, at the Leidenfrost transition. We show that oscillating boiling is resulted from the competition between two effects: separation of liquid from the heated surface due to localized boiling, and rewetting. We argue theoretically that the Leidenfrost transition can be predicted based on its link with the oscillating boiling phenomenon, and verify the prediction experimentally for various liquids.

We look forward to seeing many of you at the seminar.