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溫室軌道式彌霧機(jī)氣流速度場三維模擬與試驗(yàn)
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農(nóng)業(yè)部行業(yè)科技專項(xiàng)資助項(xiàng)目（201203025）和中國農(nóng)業(yè)大學(xué)研究生創(chuàng)業(yè)專項(xiàng)資助項(xiàng)目（2012YJ099）


3-D Numerical Simulation and Experiment of Air-velocity Distribution of Greenhouse Air-assisted Sprayer
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    摘要:

    基于CFD模擬技術(shù)建立了溫室軌道式彌霧機(jī)的氣流速度場分布模型,，并對模擬結(jié)果進(jìn)行了驗(yàn)證,。研究表明，在所設(shè)計(jì)的模擬區(qū)域內(nèi)，氣流速度在垂直和水平兩個(gè)方向呈梯度減小趨勢,；改變噴孔氣流速度對氣流速度場空間分布狀態(tài)不會產(chǎn)生顯著影響,，但對霧滴的分布范圍有明顯拓展作用；把噴孔氣流速度由25 m/s提高到50 m/s,，可將吹送距離由2.4 m增大到3.6 m,，氣流速度場范圍半徑由0.20 m擴(kuò)大到0.25 m。試驗(yàn)和模擬結(jié)果對比表明,，所建模擬模型能夠較準(zhǔn)確地模擬溫室軌道式彌霧機(jī)氣流速度場的速度分布特性,。

    Abstract:

    An air-velocity distribution model of greenhouse air-assisted sprayer was built by means of CFD simulation technique. Experiments were designed for the evaluation of the simulation results. The research showed that the air velocity decreased as the distance increasing from spray nozzle in vertical and horizontal directions. The change of air flow rate at nozzle had no remarkable influence on the characteristic of air-velocity distribution, but enlarged the droplet distribution area significantly. By increasing the nozzle flow rate from 25 m/s to 50 m/s, the blowing distance could be increased from 2.4 m to 3.6 m, the range of air-velocity distribution expanded from 0.20 m to 0.25 m. The contrast of experiment results and simulation results showed that the simulation model built can be an accurate simulation of the air-velocity distribution of a greenhouse air-assisted sprayer.

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祁力鈞,王虎,張建華,冀榮華,王俊.溫室軌道式彌霧機(jī)氣流速度場三維模擬與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(2):69-74. Qi Lijun, Wang Hu, Zhang Jianhua, Ji Ronghua, Wang Jun.3-D Numerical Simulation and Experiment of Air-velocity Distribution of Greenhouse Air-assisted Sprayer[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(2):69-74.

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  • 在線發(fā)布日期: 2013-02-04
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