Molecular dynamics simulations of heat and momentum transfer at a solid-fluid interface: Relationship between thermal and velocity slip

Rajesh Khare, Pawel Keblinski, Arun Yethiraj

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65 Scopus citations

Abstract

The thermal resistance of a model solid-liquid interface in the presence of laminar shear flow is investigated using molecular dynamics simulations. Two model liquids - a monoatomic liquid and a polymeric liquid composed of 20 repeat units - are confined between walls which are modeled as idealized lattice surfaces composed of atoms identical to the monomers. We find that in the absence of a velocity slip (discontinuity) at the solid-fluid interface, the mass flow does not affect the thermal interfacial resistance, but the presence of velocity slip results in an increase in the interfacial thermal resistance by about a factor of two.

Original languageEnglish
Pages (from-to)3401-3407
Number of pages7
JournalInternational Journal of Heat and Mass Transfer
Volume49
Issue number19-20
DOIs
StatePublished - Sep 2006

Keywords

  • Interfacial thermal resistance
  • Molecular dynamics
  • Velocity slip

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