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改進雙圓弧罩蓋減少霧滴飄失試
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Double-foil Shield for Reducing Spray Drift
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    摘要:

    通過計算流體力學(xué)軟件Fluent的仿真模擬，分析現(xiàn)有雙圓弧罩蓋噴霧的流場和霧滴運動軌跡，并針對存在的問題提出了罩蓋的改進方案。與改進前罩蓋噴霧、常規(guī)噴霧進行了流場、霧滴運動軌跡和沉積率的仿真對比以及霧滴沉積率的風(fēng)洞試驗對比。仿真結(jié)果表明，改進后罩蓋的流場有利于霧滴向靶標(biāo)的沉降，當(dāng)風(fēng)速為3m/s時，安裝改進罩蓋噴霧的霧滴沉積率為76.88％，高于改進前的63.26％和常規(guī)噴霧的50.16％。風(fēng)洞試驗結(jié)果表明，當(dāng)風(fēng)速為3m/s時，改進罩蓋的霧滴沉積率為73.35％，高于改進前的66.90％和常規(guī)噴霧的

    Abstract:

    49.95％。The flow field and droplets trajectory of the existing double-foil shield was analyzed by computational fluid dynamics software Fluent and improved scheme was put forward. Contrast experiment on flow field, droplets trajectory and droplet rate with shield before improvement and conventional spraying was carried out in simulative experiment and wind tunnel. The simulation experiment results indicate that improved double-foil shield was good for droplets to deposit and provided a deposit of 76.88% with the wind speed 3m/s, more than that before improvement which was 63.26% and conventional spraying was 50.16%. The wind tunnel experiment results indicate that improved double-foil shield provided a deposit of 73.35% with the wind speed 3m/s, more than that before improvement which was 66.90% and conventional spraying was 49.95%. 

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張京,楊雪玲,何雄奎,宋堅利.改進雙圓弧罩蓋減少霧滴飄失試[J].農(nóng)業(yè)機械學(xué)報,2009,40(7):67-71. Double-foil Shield for Reducing Spray Drift[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(7):67-71.

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