教師資料查詢 | 類別: 期刊論文 | 教師: 洪祖昌 Hong Zuu-chang (瀏覽個人網頁)

標題:Rarefaction Effect on Flow Characteristics of Microchannel Flows
學年99
學期1
出版(發表)日期2010/09/01
作品名稱Rarefaction Effect on Flow Characteristics of Microchannel Flows
作品名稱(其他語言)
著者Hsieh, Tse-yang; Lee, Tzung-hang; Hong, Zuu-chang; Yang, Jaw-yen; Kang, Jhen-hao
單位淡江大學機械與機電工程學系
出版者台南市中華民國航空太空學會
著錄名稱、卷期、頁數Journal of Aeronautics, Astronautics and Aviation. Series A=航空太空及民航學刊 42(3), pp.149-158
摘要Microchannel flow has attracted much attention due to the advent of micro-electro-mechanical systems (MEMS). In this work, the direct simulation Monte Carlo (DSMC) method is employed to study nitrogen gas flows in a two-dimensional microchannel for different degrees of rarefaction. Meanwhile, in order to demonstrate the rarefaction effect on the flow characteristics of the microchannel flow, Gas-Kinetic Bhatnagar-Gross-Krook (Gas-BGK) scheme is performed for solving Navier-Stokes equations with slip velocity boundary condition imposed at the channel wall. It is found that the discrepancies in the flow characteristics between the results obtained by the DSMC method and Gas-BGK scheme will increase when the Knudsen (Kn) number of the flow field is increased. For the flow characteristics around the wall, the rarefaction effect imposes stronger effect on the velocity field as compared to the temperature filed. The DSMC method should be employed in the flow analysis of MEMS as the Ku number of the gas flow is greater than 0.01.
關鍵字Microchannel flow; DSMC; Gas-BGK; Rarefaction effect; Knudsen number
語言英文
ISSN1990-7710
期刊性質國內
收錄於EI
產學合作
通訊作者Hsieh, Tse-yang
審稿制度
國別中華民國
公開徵稿
出版型式紙本
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