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泵裝置拍門阻力損失數(shù)值模擬與試驗(yàn)
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“十一五”國家科技支撐計(jì)劃資助項(xiàng)目（2006BAB04A03）;江蘇省產(chǎn)學(xué)研前瞻性聯(lián)合研究項(xiàng)目（BY2009138）


Numerical Simulation and Experiment on Resistance Loss of Flap Gate
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    采用數(shù)值模擬與模型試驗(yàn)相結(jié)合的方法對(duì)模型泵裝置出口拍門的阻力損失進(jìn)行研究。通過模型試驗(yàn)獲得了出口拍門在不同開啟角度時(shí)的阻力損失值，歸納了拍門阻力損失隨流量變化的規(guī)律。結(jié)果表明：拍門阻力損失受導(dǎo)葉出口環(huán)量的影響，阻力損失與流量的平方不呈正比，在相同流量時(shí)，泵裝置效率下降值與拍門開度亦非正相關(guān)。應(yīng)用CFD軟件對(duì)泵裝置設(shè)計(jì)工況時(shí)拍門開啟角度25°及無拍門時(shí)出水流態(tài)進(jìn)行數(shù)值計(jì)算，分析了有、無拍門的出流流態(tài)，依據(jù)數(shù)值模擬結(jié)果預(yù)測(cè)了拍門阻力損失，在設(shè)計(jì)工況時(shí)的數(shù)值預(yù)測(cè)值與試驗(yàn)結(jié)果吻合較好。

    Abstract:

    In order to investigate the resistance characteristics of flap gate, the experimental and numerical simulation studies of resistance loss of flap gate were performed. Outlet circulation of the pump has great influence on resistance loss of flap gate, so the resistance loss and the square value of flow do not show the proportional relationship. In the conditions of the same flow, efficiency decreased value of pump system was negative correlated with the open angle of flap gate. On the basis of numerical simulation, flow patterns of the outlet were analyzed with and without flap gate under designed operating condition. The resistance loss of flap gate was predicted. A good agreement was achieved between the predicted data and the experimental data under designed operating condition.

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楊帆,周濟(jì)人,劉超.泵裝置拍門阻力損失數(shù)值模擬與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(9):108-112,44. Yang Fan, Zhou Jiren, Liu Chao. Numerical Simulation and Experiment on Resistance Loss of Flap Gate[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(9):108-112,44.

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