Numerical Study of Rarefaction and Compressibility Effects on Gas Flows in Microchannels

• Main Authors: Huai-Gang Liu, 劉懷剛
• Other Authors: Chii-Jong Hwang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/65506504902516055968

碩士 === 國立成功大學 === 航空太空工程學系碩博士班 === 94 === The progression of Micro-electromechanical Systems, MEMS is successfully integrated into the professional field such as electronics, mechanics, materials, and optoelectronics, in this case, micro-fluidics plays an essential role. Due to the characteristic length of geometrical shape in flow field appear in the level of micrometer, the flow inside microchannel is relatively rarefaction. In view of traditional theory of continuum under the measurement of micronano, the theory is facing the difficulty of application. The article aims at producing a more practical three-dimension microchannel of trapezoid cross-section and analyzing how rarefaction effect and effect of compressibility interact in the spectrum of slip flow, by using Navier-Stokes Equation in relation to the boundary condition of slip flow and 3-D tetrahedral/ prismatic mesh system； Furthermore, it will establish a three-dimension numerical simulating system through which property of flow field is fast and accurately predicted. As the micro-fluidics-related statistic data is built, analysis of physic phenomenon and the characteristics of flow field is underway.