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“V”型無閥壓電泵的流阻特性
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Property of Flow Resistance for Piezoelectric Pump with “V”-shape Tube
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    摘要:

    基于擴(kuò)散/漸縮管流動特性，提出一種用于無閥壓電泵的 “V”型管，以滿足微型全分析系統(tǒng)等應(yīng)用需求。闡述了“V”型無閥壓電泵的結(jié)構(gòu),對“V”型無閥壓電泵內(nèi)的流阻特性進(jìn)行理論分析。通過采用有限元法對“V”型管進(jìn)行模擬計算，研究“V”型管的結(jié)構(gòu)參數(shù)對其流阻特性的影響。研究表明：“V”型管的分流角、擴(kuò)散角以及進(jìn)口寬度對其流阻特性影響較大，“V”型管的長度對其流阻特性影響較小；較大的“V”型管深度有利于提高泵的效率。

    Abstract:

    Based on the flow characteristics of diffuser/nozzle used in valve-less piezoelectric pump, a new type of “V”-shape tube was presented for micro total analysis systems. The structure and flow property of the valveless piezoelectric pump with “V”-shape tube was analyzed. Finite element method was applied to simulate the flow in the “V”-shape tube for the flow characteristics. And the ANSYS was employed to analyze numerically the effects of the “V”-shape tube structure on the flow resistance property . The results show that, compared with the splitter angle, diffuser angle and the inlet width of “V”-shape tube, the effect of the length of the “V”-shape tube on the flow resistance property is smaller. And a large depth benefits to improve the pump efficiency. 

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何秀華,張睿,楊嵩,鄧許連.“V”型無閥壓電泵的流阻特性[J].農(nóng)業(yè)機械學(xué)報,2009,40(12):242-246.Property of Flow Resistance for Piezoelectric Pump with “V”-shape Tube[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(12):242-246.

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