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:The Analytical and Numerical Solutions for Gaseous Slip Flows in Micro-Channels
學年88
學期2
出版(發表)日期2000/03/01
作品名稱The Analytical and Numerical Solutions for Gaseous Slip Flows in Micro-Channels
作品名稱(其他語言)微流道內之滑動氣體流場探討
著者陳慶祥; Chen, C. S.
單位淡江大學航空太空工程學系
出版者Taipei : Chinese Institute of Chemical Engineers
著錄名稱、卷期、頁數Journal of the Chinese Institute of Engineers=中國工程學刊 23(2), pp.229-235
摘要The present work studies analytically as well as numerically 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 the 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 microchannel
flows. The convective terms in the boundary-layer equations
can be neglected when compared with the diffusive terms. This reduces
the governing equations to a simple parabolic equation which
can be solved analytically. Both analytical and numerical solutions
compare quite well with experimental data. 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. Our
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.
關鍵字滑動流;微流道;微機電系統 Slip flow;Micro-channel;MEMS
語言英文
ISSN0253-3839
期刊性質國內
收錄於
產學合作
通訊作者
審稿制度
國別中華民國
公開徵稿
出版型式紙本
相關連結
Google+ 推薦功能,讓全世界都能看到您的推薦!