Heat Transfer and Flow Friction for Gaseous Flow in Microtubes

機構典藏 > College of Engineering > Graduate Institute & Department of Aerospace Engineering > Journal Article > Item 987654321/46007

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Title:	Heat Transfer and Flow Friction for Gaseous Flow in Microtubes
Authors:	Chen, C. S.;Kuo, W. J.
Contributors:	淡江大學航空太空工程學系
Keywords:	Slip flow;Heat transfer;Microtube flow
Date:	2003-09
Issue Date:	2013-03-20 16:36:30 (UTC+8)
Publisher:	臺南市：中國航空太空學會
Abstract:	In this paper we propose an analytical and a numerical procedure for solving gaseous slip flow in microtubes. An isothermal flow assumption is needed for the analytical procedure. The analytical solutions are capable of predicting very low Reynolds number microtube flows and compare quite well with the numerical results. The numerical procedure solves the compressible boundary-layer equations using an implicit finite-difference scheme. The parabolic character of the boundary-layer equations renders the numerical procedure a very efficient, accurate and robust tool for studying gaseous slip flows. It takes less than 30 seconds for this numerical procedure to run a typical case on a Pentium IV 1.5G computer. It was observed from the numerical simulations that the fluid goes through a strong expansion process for larger Reynolds number flows and the fluid temperature drops well below the wall temperature. This is quite different from the available experimental data. A reasonable explanation has been offered.
Relation:	中國航空太空學會學刊=Transactions of the Aeronautical and Astronautical Society of the Republic of China 35(3)，頁257-266
Appears in Collections:	[Graduate Institute & Department of Aerospace Engineering] Journal Article

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