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扇形霧噴頭霧化過程中霧滴運(yùn)動(dòng)特性
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國家自然科學(xué)基金資助項(xiàng)目(30800728、30971940);國家高技術(shù)研究發(fā)展計(jì)劃（863計(jì)劃）資助項(xiàng)目(2008AA100904)


Droplets Movement Characteristics in Atomization Process of Flat Fan Nozzle
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    摘要:

    利用相位多普勒粒子分析儀測試了LU120—03型扇形霧噴頭噴霧扇面內(nèi)的霧滴運(yùn)動(dòng)速度,，計(jì)算得出霧滴運(yùn)動(dòng)初速度即液膜破碎速度,，確定了霧滴在噴霧扇面內(nèi)的速度分布,。結(jié)果表明：靠近噴頭的區(qū)域，扇面邊緣的最小霧滴速度小于中心位置的最小霧滴速度,，更易飄失,；遠(yuǎn)離噴頭的區(qū)域，細(xì)小霧滴速度迅速衰減,，極易受氣流影響而產(chǎn)生飄失,。

    Abstract:

    The droplets velocity in spraying fan of flat fan nozzle LU120—03 was tested by phase Doppler particle analyzer (PDPA). The initial velocity was liquid-sheet velocity and the velocity distribution in spraying fan was confirmed. The results showed that the velocity of minimum droplets in spraying fan edge was lower than that in central position near the nozzle, so it was more likely to drift; the fine droplets velocity decreased rapidly far away from the nozzle so that the droplets were very easy to result in drift influenced by airflow. 

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張京,宋堅(jiān)利,何雄奎,曾愛軍,劉亞佳.扇形霧噴頭霧化過程中霧滴運(yùn)動(dòng)特性[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(4):66-69，75. Zhang Jing, Song Jianli, He Xiongkui, Zeng Aijun, Liu Yajia. Droplets Movement Characteristics in Atomization Process of Flat Fan Nozzle[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(4):66-69,，75.

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