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National Chung Hsing University Institutional Repository - NCHUIR > 理學院 > 應用數學系所 > 依資料類型分類 > 期刊論文 >  Effects of viscous dissipation on slip-flow heat transfer in a micro annulus

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/135681

標題: Effects of viscous dissipation on slip-flow heat transfer in a micro annulus
作者: Char, M.I.;Tai, B.C.
賈明益
關鍵字: Micro annulus;Brinkman number;Knudsen number;Nusselt number;La-DQM;flux boundary-condition;diatomic gas-flow;differential quadrature;surface-roughness;graetz problem;microchannel;simulation;equations;dsmc
日期: 2010
Issue Date: 2012-12-14 12:05:28 (UTC+8)
關連: International Journal of Heat and Mass Transfer, Volume 53, Issue 7-8, Page(s) 1402-1408.
摘要: This study deals numerically with the laminar slip-flow forced convection in a micro annulus with constant wall temperature. The solution takes the effects of viscous dissipation, velocity-slip and temperature-jump conditions at the surface into considerations. A hybrid application of the Laplace transformation technique and the local adaptive differential quadrature method (La-DQM) is used to solve the energy equation for the developing temperature field. Of interest are the effects of the Brinkman number Br, the Knudsen number Kn, and the radius ratio beta of inner to outer cylinders on the temperature distribution and the Nusselt number. The results indicate that fully developed Nusselt number increases with an increase in the radius ratio beta or a decrease in the Knudsen number Kn, but it is rather insensitive to the Brinkman number. The local Nusselt number in the thermal entrance region increases as Br increases. Comparisons are also made of the dimensionless temperature gradient at the outer cylinder between the present results and published data for the circular tube case beta = 0, and the agreement is found out to be generally good. (C) 2009 Elsevier Ltd. All rights reserved.
Relation: International Journal of Heat and Mass Transfer
Appears in Collections:[依資料類型分類] 期刊論文
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