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:Gas flow in micro-channels using a boundary-layer approach
學年89
學期1
出版(發表)日期2000/12/01
作品名稱Gas flow in micro-channels using a boundary-layer approach
作品名稱(其他語言)
著者Chen, Ching-Shung
單位淡江大學航空太空工程學系
出版者Geneva: Inderscience Publishers
著錄名稱、卷期、頁數International Journal of Computer Applications in Technology 13(6), pp.316-323
摘要The present work numerically studies gaseous flow in micro-channels. The working fluids are nitrogen and helium. The proposed model assumes the fluid is a continuum but employs a slip boundary condition on the channel wall. Although slip flow in micro-channels can be investigated by solving numerically the compressible Navier-Stokes equations, as was done previously by several investigators, the hyperbolic-parabolic character of the equations makes it very inefficient. The results of present work show that they can be predicted accurately by solving the compressible boundary-layer equations. The parabolic character of the boundary-layer equations renders the present method a very efficient and accurate tool in studying slip flows. The results also demonstrate that diffusion is the dominant mechanism in momentum and energy transfers in micro-channel flows. The slip boundary condition is the result of rarefaction, which is due to the incomplete momentum and energy exchanges between gas molecules and the walls. The results show that the slip condition has decisive effects on the velocity and mass flow rate of the flow and has to be taken into account.
關鍵字Boundary conditions; Boundary layers; Compressible flow; Diffusion in gases; Energy transfer; Helium; Microelectromechanical devices; Navier Stokes equations; Nitrogen; Microchannel flow; Slip flow; Channel flow
語言英文
ISSN0952-8091
期刊性質國外
收錄於
產學合作
通訊作者
審稿制度
國別瑞士
公開徵稿
出版型式紙本
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