Reconsideration of the Transient Line Heat-Source Technique : Analytical Discussion on the Influence of Natural Convection
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概要
- 論文の詳細を見る
In this paper, weak natural convection effects in the transient hot wire method of liquid thermal conductivity measurement are analytically investigated. Precise numerical calculations are performed using the FDM, concerning the slow natural convection liquid flow around a single thin hot wire and the distribution of the modified temperature term due to the flow. Then, the time dependencies of the apparent thermal conductivity, including the natural convection effects, are shown for various measuring conditions. The error in measurement are also shown for the case where two hot wires, having different lengths, are set in the Wheatstone bridge circuit to decrease the edge effects. It is shown, as a result, that slight natural convection effects appear, even during short periods of measurement, where the effects on accuracy had been considered negligible.
- 一般社団法人日本機械学会の論文
- 1987-12-16
著者
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MATSUMOTO Koji
Department of Obstetrics and Gynecology, Institute of Clinical Medicine, University of Tsukuba
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SAITO Akio
Department of Hematology, National Hospital Organization Nishigunma National Hospital
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Utaka Yoshio
Department of Mechanical Engineering, Faculty of Engineering, Yokohama National University
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Utaka Y
National Defense Academy Kanagawa Jpn
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Saito A
Tokyo Inst. Technology Tokyo Jpn
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Utaka Yoshio
Department Of Mechanical Engineering And Materials Science Graduate School Yokohama National Univers
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Matsumoto Koji
Department Of Obstetrics And Gynecology Graduate School Of Comprehensive Human Science University Of
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Matsumoto Koji
Department Of Electrical And Electronic Engineering Toyohashi University Of Technology:(present Addr
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Matsumoto Koji
Department Of Mechanical Engineering Tokyo Institute Of Technology
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Saito Akio
Department Of Biochemistry Kinki University School Of Medicine
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