TY - JOUR
T1 - Characterization of the temperature oscillation technique to measure the thermal conductivity of fluids
AU - Bhattacharya, P.
AU - Nara, S.
AU - Vijayan, P.
AU - Tang, T.
AU - Lai, W.
AU - Phelan, Patrick
AU - Prasher, R. S.
AU - Song, D. W.
AU - Wang, J.
N1 - Funding Information:
The authors gratefully acknowledge the support of the National Science Foundation, through a GOALI award (Award No. CTS-0353543), and the direct support provided by the Intel Corporation.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/8
Y1 - 2006/8
N2 - The temperature oscillation technique to measure the thermal diffusivity of a fluid consists of filling a cylindrical volume with the fluid, applying an oscillating temperature boundary condition at the two ends of the cylinder, measuring the amplitude and phase of the temperature oscillation at any point inside the cylinder, and finally calculating the fluid thermal diffusivity from the amplitude and phase values of the temperature oscillations at the ends and at the point inside the cylinder. Although this experimental technique was introduced by Santucci and co-workers nearly two decades ago, its application is still limited, perhaps because of the perceived difficulties in obtaining accurate results. Here, we attempt to clarify this approach by first estimating the maximum size of the liquid's cylindrical volume, performing a systematic series of experiments to find the allowable amplitude and frequency of the imposed temperature oscillations, and then validating our experimental setup and the characterization method by measuring the thermal conductivity of pure water at different temperatures and comparing our results with previously published work.
AB - The temperature oscillation technique to measure the thermal diffusivity of a fluid consists of filling a cylindrical volume with the fluid, applying an oscillating temperature boundary condition at the two ends of the cylinder, measuring the amplitude and phase of the temperature oscillation at any point inside the cylinder, and finally calculating the fluid thermal diffusivity from the amplitude and phase values of the temperature oscillations at the ends and at the point inside the cylinder. Although this experimental technique was introduced by Santucci and co-workers nearly two decades ago, its application is still limited, perhaps because of the perceived difficulties in obtaining accurate results. Here, we attempt to clarify this approach by first estimating the maximum size of the liquid's cylindrical volume, performing a systematic series of experiments to find the allowable amplitude and frequency of the imposed temperature oscillations, and then validating our experimental setup and the characterization method by measuring the thermal conductivity of pure water at different temperatures and comparing our results with previously published work.
KW - Temperature oscillation technique
KW - Thermal conductivity
KW - Thermal diffusivity
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U2 - 10.1016/j.ijheatmasstransfer.2006.02.023
DO - 10.1016/j.ijheatmasstransfer.2006.02.023
M3 - Article
AN - SCOPUS:33745150361
SN - 0017-9310
VL - 49
SP - 2950
EP - 2956
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 17-18
ER -