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Indexed by:期刊论文

Date of Publication:2013-04-15

Journal:APPLIED PHYSICS LETTERS

Included Journals:SCIE、EI、Scopus

Volume:102

Issue:15

ISSN No.:0003-6951

Abstract:Droplet jumping from condensing surfaces induced by droplet coalescence during dropwise condensation of mixed steam on a superhydrophobic surface can significantly enhance condensation heat transfer of mixed steam with non-condensable gas. This phenomenon was visually observed and theoretically analyzed in the present paper. The dynamic evolution of droplet and the velocity distribution inside the droplet during coalescence were simulated using multiphase lattice Boltzmann method. The energy distribution released by droplet coalescence was calculated statistically, and the jumping height induced by droplet coalescence on a superhydrophobic surface was predicted based on the energy conservation method. The theoretical predictions obtained by the modified model proposed in this paper agree well with the experimental observations. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4799650]