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:The Rationality of 2-D Simplification of Low-Speed Short Microchannel Flows
學年97
學期2
出版(發表)日期2009/04/01
作品名稱The Rationality of 2-D Simplification of Low-Speed Short Microchannel Flows
作品名稱(其他語言)
著者Hong, Zuu-Chang; Pan, Ying-Jhe; Chiu, Yu-Chung; Yang, Chien-Yuh
單位淡江大學機械與機電工程學系
出版者臺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=航空太空及民航學刊 Series A 41(1), pp.1-12
摘要The Direct-simulation Monte Carlo (DSMC) method has been employed to analyze the rationalityof the 2-D simplification for a 3-D straight rectangular cross-sectional channel, a 3-D straight rectangular cross-sectional channel with microstructures and a 3-D straight rectangular cross-sectional channel with a backward-facing step. An implicit treatment for low-speed inflow and outflow boundaries for the DSMC of the microchannel flow is employed. The 3-D microchannel flows are simulated with the various cross-aspect rations ranging between 1 and 5. The calculated heat and flow properties in the 3-D cases are compared with the results of the 2-D case. It shows that when the aspect ratio is less than 3, the two extra side walls in the 3-D case have significant effects on the heat transfer and flow properties. When the aspect ratio increases, the flow properties and heat transfer characteristics of the 3-D simulations tend to approach that of the 2-D results. This paper also provides the imformaion of the approaching level for different geometry of the microchannels. It is found that the approaching level becomes slower when the geometry of the channel becomes more complicated. In the present study , when the cross-section aspect ratio is 5 , the approaching level of the above mentioned three different geometry of microchannels are found to be about 99%, 97.8% and 97% respectively.
關鍵字DSMC;3-D microchannel;Low-speed flow
語言英文
ISSN1990-7710
期刊性質國內
收錄於EI
產學合作
通訊作者Hong, Zuu-Chang
審稿制度
國別中華民國
公開徵稿
出版型式紙本
相關連結
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