A possible role of nanostructured ridges on boiling heat transfer enhancement

Shalabh C. Maroo, J. N. Chung

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Evaporation of a nanoscale meniscus on a nanostructured heater surface is simulated using molecular dynamics. The nanostructures, evenly spaced on the surface, are ridges with a width and height of 0.55nm and 0.96nm, respectively. The simulation results show that the film breaks during the early stages of evaporation due to the presence of nanostructures and no nonevaporating film forms (unlike a previous simulation performed in the absence of nanostructures where nonevaporating film forms on the smooth surface). High heat transfer and evaporation rates are obtained. We conclude that heat transfer rates can be significantly increased during bubble nucleation and growth by the presence of nanostructure ridges on the surface as it can break the formation of nonevaporating film. This causes additional chaos and allows the surrounding cooler liquid to come in contact with the surface providing heat transfer enhancements.

Original languageEnglish (US)
Article number041501
JournalJournal of Heat Transfer
Volume135
Issue number4
DOIs
StatePublished - Apr 22 2013

Keywords

  • Evaporation
  • High heat flux
  • Meniscus
  • Molecular dynamics
  • Nanostructure
  • Nonevaporating film

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'A possible role of nanostructured ridges on boiling heat transfer enhancement'. Together they form a unique fingerprint.

  • Cite this