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液環(huán)泵內(nèi)部氣液兩相流動(dòng)及其性能分析
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國家自然科學(xué)基金資助項(xiàng)目（51109104）、“十二五”國家科技支撐計(jì)劃資助項(xiàng)目（2013BAF01B02）、甘肅省高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資助項(xiàng)目和蘭州理工大學(xué)?；鹳Y助項(xiàng)目（Q201101、X1006XC002）


Investigation on Inner Gas-liquid Flow and Performance of Liquid-ring Pump
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    摘要:

    為改善液環(huán)泵水力性能，采用VOF氣液兩相流動(dòng)模型對(duì)液環(huán)真空泵內(nèi)部三維非穩(wěn)態(tài)氣液兩相流動(dòng)進(jìn)行數(shù)值模擬。通過數(shù)值模擬分析葉輪及泵腔內(nèi)的流線分布、速度分布、相態(tài)分布及壓力分布規(guī)律，對(duì)泵內(nèi)復(fù)雜的二次流進(jìn)行了分析，對(duì)液環(huán)真空泵工作過程中泵內(nèi)氣液兩相流的自由分界面進(jìn)行追蹤，并分析了泵內(nèi)氣液兩相流自由分界面的變化規(guī)律及其與泵外特性的關(guān)系。對(duì)液環(huán)泵進(jìn)行試驗(yàn)研究，模擬結(jié)果與試驗(yàn)結(jié)果進(jìn)行對(duì)比分析表明，數(shù)值方法結(jié)果與試驗(yàn)結(jié)果基本一致，能夠較準(zhǔn)確地描述液環(huán)泵內(nèi)氣液兩相流流動(dòng)規(guī)律，捕捉氣液分界面，預(yù)估液環(huán)泵的水力性能，為液環(huán)泵的性能優(yōu)化研究提供了依據(jù)。

    Abstract:

    With the aim to improve the hydraulic performance of liquid-ring pump, the three dimensional transient gas-liquid flow in liquid-ring pump was simulated by using the volume of fluid (VOF) method. The streamline, the distribution of velocity, press and the volume fraction were investigated. The secondary flow in pump was analyzed. The free interface of gas and liquid phase in pump was traced, and the relation between the shape of the free interface and the hydraulic performance of the pump was analyzed. The experimental research was carried out. The numerical results and the experimental results show good agreement. The numerical method of VOF is suitable for simulating the gas-liquid flow in liquid-ring pump. The free interface could be traced exactly and the hydraulic performance could be evaluated with enough accuracy, which pave the way for hydraulic optimization of liquid-ring pump.

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張人會(huì),郭廣強(qiáng),楊軍虎,李仁年.液環(huán)泵內(nèi)部氣液兩相流動(dòng)及其性能分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(12):99-103. Zhang Renhui, Guo Guangqiang, Yang Junhu, Li Rennian. Investigation on Inner Gas-liquid Flow and Performance of Liquid-ring Pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(12):99-103.

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  • 收稿日期:2014-01-08
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  • 在線發(fā)布日期: 2014-12-10
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