Frequency Response of a Constant-Temperature Hot Wire to Temperature Fluctuations : Heat Transfer, Power, Combustion, Thermophysical Properties
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概要
- 論文の詳細を見る
A temperature-sensitive hot wire under constant-temperature operation is analyzed to predict its frequency response to temperature fluctuations of the fluid. Effects of the finite Wollaston length, the over-heat ratio and the transconductance of the amplifier are taken into account, and a precise expression for the transfer function is derived. Various probes with different geometries are dynamically calibrated using the newly developed procedure, in which a linear temperature distribution or a thermal wake just behind parallel line sources is utilized to generate the prescribed temperature fluctuations over a wider frequency rage. Good agreement is obtained between the predicted and experimental results on the gain of the sensitivity. The gain increases slightly as the over-heat ratio increases, and is least affected by the transconductance. Owing to the moderate thermal inertia of the Wollaston portion, the attenuation in the gain sometimes appears in the range of energy-containing eddies.
- 一般社団法人日本機械学会の論文
- 1987-11-16
著者
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Maekawa H
Faculty Of Engineering Niigata University
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Kobayashi M
Epma Laboratory Niigata University Center For Instrumental Analysis
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Kobayashi Mutsuo
Faculty of Engineering, Niigata University
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Maekawa Hiroshi
Faculty of Engineering, Niigata University
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YASHIRO Kazuo
Tokyo Electric Power Co. Ltd.
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Kobayashi M
Faculty Of Engineering Niigata University
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Maekawa Hiroshi
Faculty Of Engineering Kagoshima University
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Kobayashi Mutsuo
Faculty Of Engineering Niigata University
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