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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/38206

    Title: Numerical Studies of Curved-walled Micro Nozzle/Diffuser
    Authors: Chen, Yu-tang;Hsu, Chin-chun;Chang, Ming-cheng;Kang, Shung-wen
    Contributors: 淡江大學機械與機電工程學系;淡江大學水資源及環境工程學系
    Keywords: Nozzle;Diffuser;Pressure loss coefficient;Reynolds number
    Date: 2006-01-18
    Issue Date: 2010-04-15 10:31:30 (UTC+8)
    Publisher: Institute of Electrical and Electronics Engineers (IEEE)
    Abstract: In this study, commercially available software CFD was adopted for analyzing the performance of straight-walled and curved-walled micro nozzle/diffuser. Such nozzle/diffuser was used in valve-less micro-pumps. This model tested different types of nozzle/diffuser and the results showed that the pressure loss coefficient for nozzle/diffuser decreases with the increase of Reynolds number. At the same Reynolds number, the pressure loss coefficient for nozzle is higher than that of the diffuser. At a given volumetric flow rate, the pressure loss coefficient and ratio of pressure loss coefficient for curved-walled nozzle/diffuser are slightly higher than that of the straight-walled nozzle/diffuser. In this study, the numerical data was found good agreement with previous analytic solution and experimental results.
    Relation: Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on, pp.841-845
    DOI: 10.1109/NEMS.2006.334908
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Proceeding
    [Graduate Institute & Department of Mechanical and Electro-Mechanical Engineering] Proceeding

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