Numerical analysis of convective instabilities in a transient short-hot-wire setup for measurement of liquid thermal conductivity

Roberto Rusconi; Wesley C. Williams; Jacopo Buongiorno; Roberto Piazza; Lin Wen Hu

doi:10.1007/s10765-007-0202-2

Numerical analysis of convective instabilities in a transient short-hot-wire setup for measurement of liquid thermal conductivity

Roberto Rusconi, Wesley C. Williams, Jacopo Buongiorno, Roberto Piazza, Lin Wen Hu

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

Numerical simulation has been used to investigate the effects of natural convection on measurements of the thermal conductivity of fluids by transient hot-wire methods. Comparison of the numerical data with the experimental results obtained with a custom-built setup exploiting a short-wire geometry allows fixing an operationally useful time scale, where convective effects can be safely neglected.

Original language	English
Pages (from-to)	1131-1146
Number of pages	16
Journal	International Journal of Thermophysics
Volume	28
Issue number	4
DOIs	https://doi.org/10.1007/s10765-007-0202-2
State	Published - Aug 2007
Externally published	Yes

Funding

This work was made possible by the generous support of the joint MIT/Politecnico “Progetto Rocca” Program, the Idaho National Laboratory, and the U.S. Department of Energy Innovations in Nuclear Infrastructure and Education grant.

Keywords

Convection
Liquids
Numerical simulations
Thermal conductivity
Transient hot-wire technique

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10.1007/s10765-007-0202-2

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abstract = "Numerical simulation has been used to investigate the effects of natural convection on measurements of the thermal conductivity of fluids by transient hot-wire methods. Comparison of the numerical data with the experimental results obtained with a custom-built setup exploiting a short-wire geometry allows fixing an operationally useful time scale, where convective effects can be safely neglected.",

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AU - Piazza, Roberto

AU - Hu, Lin Wen

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KW - Numerical simulations

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KW - Transient hot-wire technique

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Numerical analysis of convective instabilities in a transient short-hot-wire setup for measurement of liquid thermal conductivity

Abstract

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