教師資料查詢 | 類別: 期刊論文 | 教師: 陳慶祥 CHEN CHING-SHUNG (瀏覽個人網頁)

標題:Heat Transfer Characteristics of Gaseous Flow in Long Mini- and Microtubes
學年93
學期1
出版(發表)日期2004/09/01
作品名稱Heat Transfer Characteristics of Gaseous Flow in Long Mini- and Microtubes
作品名稱(其他語言)
著者Chen, Ching-shung; Kuo, W.J.
單位淡江大學航空太空工程學系
出版者Taylor & Francis
著錄名稱、卷期、頁數Numerical Heat Transfer, Part A 46(5), pp.497-514
摘要A numerical procedure which solves the compressible boundary-layer equations is used to study the heat transfer characteristics of gaseous laminar and turbulent flows in mini- and microtubes. Uniform wall heat flux and isothermal wall boundary conditions are simulated. The numerical results show that when the tube diameter is large and the Reynolds number is small, the numerically predicted Nusselt numbers agree with conventional correlations. As the tube diameter gets small and the Reynolds number gets large, the heat transfer characteristics become quite different from those given by the conventional correlations. The reasons for the differences can be explained satisfactorily by the compressibility and the accompanying strong expansion process of the gas along the longitudinal axis. The parabolic character of the boundary-layer equations renders the numerical procedure a very efficient, accurate, and robust tool for studying compressible microtube flows. It took less than 3 min for this numerical procedure to run a typical case on a Pentium IV 2.4 G PC and is at least two to three orders of magnitude faster than the full Navier-Stokes simulations.
關鍵字
語言英文
ISSN1040-7782;1521-0634
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本
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