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    National Tsing Hua University Institutional Repository > 原子科學院  > 工程與系統科學系 > 會議論文  >  Experimental study on roughness effect for laminar micro-channel gas flow

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/47209

    Title: Experimental study on roughness effect for laminar micro-channel gas flow
    Authors: Jih-Hsing Tu;Fangang Tseng;Ching-Chang Chieng
    教師: 曾繁根
    Date: 2001
    Publisher: American Society of Mechanical Engineers
    Relation: ASME International Mechanical Engineering Congress and Exposition, Proceedings, v 2, 2001, p 3023-3028
    Keywords: micro-channels
    Abstract: Present study investigates the roughness effect on laminar gas flow for microchannels ranging from 40 to 600 μm with various roughness heights (40 82 nm) by systematical experiments. The micro-channels are manufactured by micro-machining technology and KOH anisotropic etching is employed to achieve various roughness patterns. Experimental results shows that higher product levels of Reynolds number (Reh) and friction factor (f) are obtained for microchannels of larger size and smaller relative roughness and friction factor f approaches to laminar flow theory value f0 for very smooth channel but the ratio of (f/f0) decreases as the surface roughness increases
    URI: http://www.asme.org/
    Appears in Collections:[工程與系統科學系] 會議論文

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