Anisotropic thermal conduction in a polymer liquid subjected to shear flow

David C. Venerus, Jay D. Schieber, Venkat Balasubramanian, Kendall Bush, Stoyan Smoukov

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Force Rayleigh scattering (FRS) was used to analyze the flow-induced anisotropic thermal conduction in a polymer liquid. Time-dependent measurements of the complete thermal diffusivity tensor were described on an entangled polymer melt subjected to a uniform shear deformation. The measurements were made using an improved version of the method that allows for more controlled deformations to be imposed and for precise measurements of the thermal diffusivity. The results provide the direct evidence that the thermal conductivity tensor and the stress tensor are linearly related in a deformed polymer liquid.

Original languageEnglish (US)
Article number098301
Pages (from-to)098301-1-098301-4
JournalPhysical Review Letters
Volume93
Issue number9
DOIs
StatePublished - Aug 27 2004
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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