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基于流場數(shù)值模擬的高速磁力泵汽蝕性能研
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Performance Research in High-speed Magnetic Drive Pump Based on Numerical Simulation of Flow Field
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    摘要:

    為了改善高速磁力泵的抗汽蝕性能，在泵吸入口處設(shè)置導(dǎo)流柵。建立了吸入口設(shè)置導(dǎo)流柵和未設(shè)置導(dǎo)流柵的兩種模型，采用Fluent軟件對(duì)高速磁力泵內(nèi)流場進(jìn)行數(shù)值模擬，給出了各自內(nèi)部壓力分布以及粒子流動(dòng)跡線圖。通過兩組數(shù)據(jù)的比較，得到了內(nèi)部流場的主要特征，模擬表明高速磁力泵吸入口設(shè)置軸向可變位導(dǎo)流柵可以有效提高抗汽蝕性能。數(shù)值模擬與高速磁力泵真機(jī)的試驗(yàn)對(duì)比表明，兩者幾乎一致，為高速磁力泵的改進(jìn)設(shè)計(jì)提供了一定的理論依據(jù)。

    Abstract:

    The diffuser grid was mounted at the impeller inlet to improve the anti-cavitation properties of high-speed magnetic drive pump. The fluid field of two high-speed magnetic pump, with the diffuser grid and not, was numerical simulated by Fluent program. The distribution of pressure was taken out, and the trace of the particle was plotted. The main characteristics of the interior fluid field of the two pumps were obtained by comparing with two groups of data. The results show that the pump with the diffuser grid of changeable position in axial direction can improve the anti-cavitation performance. The application examples from practical tests favorably validated the results of simulation, which provide theoretical basis for improving the design.

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孔繁余,張洪利,高翠蘭,劉建瑞.基于流場數(shù)值模擬的高速磁力泵汽蝕性能研[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(9):89-93. Performance Research in High-speed Magnetic Drive Pump Based on Numerical Simulation of Flow Field[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(9):89-93.

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