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    题名: Comparison of 3-D and 2-D DSMC Heat Transfer Calculations of Low-Speed Short Microchannel Flows
    作者: Zhen, Chaw-en;洪祖昌;Hong, Zuu-chang;Lin, Ya-ju;Hong, Nien-tzu
    贡献者: 淡江大學機械與機電工程學系
    日期: 2007-01
    上传时间: 2010-03-26 19:42:23 (UTC+8)
    出版者: Philadelphia: Taylor & Francis
    摘要: The direct simulation Monte Carlo (DSMC) method has been employed to analyze the rationality of the 2-D simplification for a 3-D straight rectangular cross-sectional channel. 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 cross aspect ratios in the range of 1 and 5. The calculated flow properties in the 3-D cases are compared with the results of the 2-D case. They show that when the aspect ratio <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 is increased, the flow pattern and heat transfer characteristics tend to approach those of 2-D results. The 2-D simplification is found to be reasonable only when the cross aspect ratio is greater than 5.
    關聯: Numerical Heat Transfer, Part A: Applications 52(3), pp.239-250
    DOI: 10.1080/10407780601149888
    显示于类别:[機械與機電工程學系暨研究所] 期刊論文

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