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溫室風(fēng)送式彌霧機(jī)氣流速度場與霧滴沉積特性分析
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高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目(20110008110010)和中國農(nóng)業(yè)大學(xué)研究生科研創(chuàng)新專項(xiàng)資助項(xiàng)目(KYCX2011072)


Analysis on Features of Air-velocity Distribution and Droplets Deposition Pattern for Greenhouse Air-assisted Mist Sprayer
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    摘要:

    基于CFD模擬技術(shù)建立了溫室風(fēng)送式彌霧機(jī)氣流速度場分布模型和霧滴沉積模型。根據(jù)實(shí)測的彌霧機(jī)相關(guān)參數(shù),確定了邊界條件及模型參數(shù),得到了不同風(fēng)送氣流速度和不同噴頭體傾角條件下的彌霧機(jī)氣流速度場分布特性和霧滴沉積規(guī)律。設(shè)計(jì)了與模擬條件相同的驗(yàn)證實(shí)驗(yàn),對(duì)模擬結(jié)果進(jìn)行了驗(yàn)證分析。研究表明,模擬結(jié)果能夠較準(zhǔn)確地反映霧滴沉積規(guī)律,噴頭體安裝傾角為5°~10°時(shí),彌霧機(jī)氣流速度場分布有利于藥液獲得較好的沉積效果。

    Abstract:

    Simulating models of air-velocity distribution and droplets deposition were developed based on CFD technology. The simulation boundary conditions and model variables were defined according to the working parameters measured from the mist-sprayer. Based on these models, air-velocity distribution characteristic and droplets deposition pattern were obtained on various simulation condition such as different air-assisted velocities and nozzle installation angles. The relative errors of simulated results were confirmed through corresponding experiments on the same condition. The result showed that air-velocity distribution of the mist-sprayer was more advantageous to obtain better effect of droplet deposition when the nozzle installation angle was in the range of 5° to 10°.

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袁雪,祁力鈞,冀榮華,張建華,王虎,黃世凱.溫室風(fēng)送式彌霧機(jī)氣流速度場與霧滴沉積特性分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(8):71-77. Yuan Xue, Qi Lijun, Ji Ronghua, Zhang Jianhua, Wang Hu, Huang Shikai. Analysis on Features of Air-velocity Distribution and Droplets Deposition Pattern for Greenhouse Air-assisted Mist Sprayer[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(8):71-77.

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  • 在線發(fā)布日期: 2012-07-24
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