Anisotropic thermal conduction in a polymer liquid subjected to shear flow

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

doi:10.1103/PhysRevLett.93.098301

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 journal › Article › peer-review

37 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 language	English (US)
Article number	098301
Pages (from-to)	098301-1-098301-4
Journal	Physical Review Letters
Volume	93
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.93.098301
State	Published - Aug 27 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.93.098301

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AU - Venerus, David C.

AU - Schieber, Jay D.

AU - Balasubramanian, Venkat

AU - Bush, Kendall

AU - Smoukov, Stoyan

PY - 2004/8/27

Y1 - 2004/8/27

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AB - 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.

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Anisotropic thermal conduction in a polymer liquid subjected to shear flow

Abstract

All Science Journal Classification (ASJC) codes

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