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迷宮流道轉(zhuǎn)角對灌水器抗堵塞性能的影
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of Angle of Labyrinth Channels on Anti-clogging Performance of Emitter
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    摘要:

    以轉(zhuǎn)角分別為45.0°、60.0°、67.5°和75.0°的齒形流道灌水器為研究對象，應(yīng)用CFD流場速度數(shù)值分析、PIV顆粒運動軌跡線和速度觀測對比以及渾水抗堵塞測試相結(jié)合的方法，研究了轉(zhuǎn)角對灌水器水力性能和抗堵塞能力的影響。結(jié)果表明轉(zhuǎn)角與流量系數(shù)及流態(tài)指數(shù)均呈負相關(guān)關(guān)系，而灌水器的抗堵塞能力隨著轉(zhuǎn)角的增加呈下降趨勢。綜合分析轉(zhuǎn)角對水力性能和抗堵塞性能的影響，提出迷宮流道結(jié)構(gòu)灌水器的合理轉(zhuǎn)角為

    Abstract:

    60.0°。 The influences of angles (45.0°, 60.0°, 67.5°, 75.0°) of dental labyrinth channels drip emitter on hydraulic and anti-clogging performance was studied by the following methods: the CFD numerical simulation of the velocity in the flow field, the PIV observation of the trajectories and velocity of particles in flow path and the samples experiment. The results showed that there is a negative relationship between angle and discharge coefficient together with flow state exponent, in addition with the increasing of the angle of emitters, the anti-clogging ability declines. Therefore, combining the hydraulic and anti-clogging performance, a reasonable angle of 60.0° is put forward.

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牛文全,喻黎明,吳普特,范興科,張林.迷宮流道轉(zhuǎn)角對灌水器抗堵塞性能的影[J].農(nóng)業(yè)機械學報,2009,40(9):51-55. of Angle of Labyrinth Channels on Anti-clogging Performance of Emitter[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(9):51-55.

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