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Numerical Analysis of Convective Instabilities in a Transient Short-Hot-Wire Setup for Measurement of Liquid Thermal Conductivity |
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| Authors: | Roberto Rusconi Wesley C Williams Jacopo Buongiorno Roberto Piazza Lin-Wen Hu |
| Affiliation: | (1) Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts, 02139, U.S.A;(2) Dipartimento di Ingegneria Nucleare, Politecnico di Milano, via Ponzio 34/3, Milano, 20133, Italy |
| 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. |
| Keywords: | convection liquids numerical simulations thermal conductivity transient hot-wire technique |
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