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Data reduction of average friction factor of gas flow through adiabatic micro-channels

This paper presents data reduction of average friction factor of gas flow through adiabatic micro-channels. In the case of micro-channel gas flow at high speed, the large expansion occurs near the outlet and the pressure gradient along the length is not constant with a significant increase near the...

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Main Authors: Hong, Chungpyo, Asako, Yutaka, Morini, Gian Luca, Rehman, Danish
Format: Article
Language:English
Published: Elsevier Ltd. 2019
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/88738/1/YutakaAsako2019_DataReductionOfAverageFrictionFactor.pdf
http://eprints.utm.my/id/eprint/88738/
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.09.088
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spelling my.utm.887382020-12-29T04:17:21Z http://eprints.utm.my/id/eprint/88738/ Data reduction of average friction factor of gas flow through adiabatic micro-channels Hong, Chungpyo Asako, Yutaka Morini, Gian Luca Rehman, Danish TJ Mechanical engineering and machinery This paper presents data reduction of average friction factor of gas flow through adiabatic micro-channels. In the case of micro-channel gas flow at high speed, the large expansion occurs near the outlet and the pressure gradient along the length is not constant with a significant increase near the outlet. This results in flow acceleration and a decrease in gas temperature. Therefore the friction factor of micro-channel gas flow should be obtained with measuring both the pressure and temperature. The data reductions on friction factors were carried out under the assumption of isothermal flow for numerous experimental and numerical studies since temperature measurement of micro-channel gas flow at high speed is quite difficult due to the measurement limitations. In the previous study, it was found that the gas temperature can be determined by the pressure under the assumption of one dimensional flow in an adiabatic channel (Fanno flow). Therefore in the present study data reduction to estimate friction factors between two relatively distant points considering the effect of a decrease in temperature is introduced with the temperature determined by the measured pressure at a specific location. The Friction factors obtained by using the present data reduction are examined with the available literature and the results are compared with empirical correlations on Moody chart. Elsevier Ltd. 2019-02 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/88738/1/YutakaAsako2019_DataReductionOfAverageFrictionFactor.pdf Hong, Chungpyo and Asako, Yutaka and Morini, Gian Luca and Rehman, Danish (2019) Data reduction of average friction factor of gas flow through adiabatic micro-channels. International Journal of Heat and Mass Transfer, 129 . pp. 427-431. ISSN 0017-9310 http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.09.088 DOI:10.1016/j.ijheatmasstransfer.2018.09.088
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Hong, Chungpyo
Asako, Yutaka
Morini, Gian Luca
Rehman, Danish
Data reduction of average friction factor of gas flow through adiabatic micro-channels
description This paper presents data reduction of average friction factor of gas flow through adiabatic micro-channels. In the case of micro-channel gas flow at high speed, the large expansion occurs near the outlet and the pressure gradient along the length is not constant with a significant increase near the outlet. This results in flow acceleration and a decrease in gas temperature. Therefore the friction factor of micro-channel gas flow should be obtained with measuring both the pressure and temperature. The data reductions on friction factors were carried out under the assumption of isothermal flow for numerous experimental and numerical studies since temperature measurement of micro-channel gas flow at high speed is quite difficult due to the measurement limitations. In the previous study, it was found that the gas temperature can be determined by the pressure under the assumption of one dimensional flow in an adiabatic channel (Fanno flow). Therefore in the present study data reduction to estimate friction factors between two relatively distant points considering the effect of a decrease in temperature is introduced with the temperature determined by the measured pressure at a specific location. The Friction factors obtained by using the present data reduction are examined with the available literature and the results are compared with empirical correlations on Moody chart.
format Article
author Hong, Chungpyo
Asako, Yutaka
Morini, Gian Luca
Rehman, Danish
author_facet Hong, Chungpyo
Asako, Yutaka
Morini, Gian Luca
Rehman, Danish
author_sort Hong, Chungpyo
title Data reduction of average friction factor of gas flow through adiabatic micro-channels
title_short Data reduction of average friction factor of gas flow through adiabatic micro-channels
title_full Data reduction of average friction factor of gas flow through adiabatic micro-channels
title_fullStr Data reduction of average friction factor of gas flow through adiabatic micro-channels
title_full_unstemmed Data reduction of average friction factor of gas flow through adiabatic micro-channels
title_sort data reduction of average friction factor of gas flow through adiabatic micro-channels
publisher Elsevier Ltd.
publishDate 2019
url http://eprints.utm.my/id/eprint/88738/1/YutakaAsako2019_DataReductionOfAverageFrictionFactor.pdf
http://eprints.utm.my/id/eprint/88738/
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2018.09.088
_version_ 1687393614423916544
score 13.211869

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