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雙流體荷電霧化的PDA實(shí)驗(yàn)
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    摘要:

    液體荷電霧化技術(shù)能夠有效降低霧化的粘滯阻力,，提高霧化效果,，在霧滴形成后電場(chǎng)能減小霧滴表面張力,，使霧滴產(chǎn)生二次霧化,，進(jìn)一步減小霧滴粒徑,，同時(shí)可以提高霧滴粒徑尺度的均勻性,。以空氣,、水為介質(zhì)對(duì)自行設(shè)計(jì)的雙流體霧化噴嘴進(jìn)行了實(shí)驗(yàn)研究,，獲得了不同荷電電壓與液氣比下的霧滴粒徑,、霧滴軸向射流速度及霧滴的軸向湍流脈動(dòng)強(qiáng)度,，利用相關(guān)技術(shù)實(shí)現(xiàn)了對(duì)氣液兩相速度和湍流脈動(dòng)強(qiáng)度的測(cè)定，探討了荷電電壓對(duì)霧滴粒徑,、軸向射流速度及湍流脈動(dòng)強(qiáng)度的影響,。

    Abstract:

    The electrostatic charged spray could reduce the viscosity resistance and enhance the atomization effect. After the droplets come into being, the electric field can minish the droplets surface tension and make the droplets produce the second atomization, and further the droplets become much smaller and the uniformity of droplets diameter is improved. With the air and water as working fluids, the experimental research of twin-fluid charged spray nozzle designed by oneself was studied. The droplets diameter, the axial jet velocity and turbulent fluctuation intensity under the different charged voltages and gas-liquid ratio were obtained. The measure of two phases flow velocity and turbulent fluctuation intensity were determined. The influence of charged voltage and droplets diameter, axial jet velocity, turbulent fluctuation intensity were discussed. 

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王貞濤,岑旗鋼,宋曉寧,羅惕乾.雙流體荷電霧化的PDA實(shí)驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2008,39(10):80-84.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(10):80-84.

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