濕空氣非平衡凝結(jié)對(duì)壓氣機(jī)葉柵性能影響的數(shù)值研究
發(fā)布時(shí)間:2018-07-17 21:13
【摘要】:跨音速流動(dòng)條件下濕空氣中的水蒸氣由于快速膨脹而發(fā)生非平衡凝結(jié),凝結(jié)潛熱與跨音速氣流耦合會(huì)顯著改變流場(chǎng)結(jié)構(gòu)。本文建立了濕空氣非平衡凝結(jié)流動(dòng)的數(shù)學(xué)物理模型,對(duì)三種工況下壓氣機(jī)葉柵內(nèi)濕空氣凝結(jié)流動(dòng)進(jìn)行計(jì)算分析。計(jì)算結(jié)果表明:濕空氣壓氣機(jī)葉柵流動(dòng)中,濕空氣中水蒸氣有可能發(fā)生非平衡凝結(jié)從而對(duì)葉柵通道內(nèi)的流動(dòng)產(chǎn)生強(qiáng)烈影響,改變流場(chǎng)內(nèi)的激波結(jié)構(gòu),葉柵內(nèi)壓力系數(shù)減小最大幅度由1.38減小到0.76。
[Abstract]:Under transonic flow conditions, water vapor in wet air condenses nonequilibrium due to rapid expansion, and the coupling of condensation latent heat and transonic flow will change the flow field structure significantly. In this paper, a mathematical and physical model of wet air non-equilibrium condensation flow is established, and the condensing flow of wet air in compressor cascade under three conditions is calculated and analyzed. The results show that in the cascade flow of wet air compressor, the water vapor in wet air may occur non-equilibrium condensation, which has a strong effect on the flow in the cascade channel, and changes the shock wave structure in the flow field. The maximum reduction of the pressure coefficient in the cascade is reduced from 1.38 to 0.76.
【作者單位】: 西安科技大學(xué);陜西省建筑科學(xué)研究院;
【基金】:西安科技大學(xué)博士啟動(dòng)金(2014QDJ012);西安科技大學(xué)培育基金(201345)
【分類號(hào)】:O354.2
本文編號(hào):2130952
[Abstract]:Under transonic flow conditions, water vapor in wet air condenses nonequilibrium due to rapid expansion, and the coupling of condensation latent heat and transonic flow will change the flow field structure significantly. In this paper, a mathematical and physical model of wet air non-equilibrium condensation flow is established, and the condensing flow of wet air in compressor cascade under three conditions is calculated and analyzed. The results show that in the cascade flow of wet air compressor, the water vapor in wet air may occur non-equilibrium condensation, which has a strong effect on the flow in the cascade channel, and changes the shock wave structure in the flow field. The maximum reduction of the pressure coefficient in the cascade is reduced from 1.38 to 0.76.
【作者單位】: 西安科技大學(xué);陜西省建筑科學(xué)研究院;
【基金】:西安科技大學(xué)博士啟動(dòng)金(2014QDJ012);西安科技大學(xué)培育基金(201345)
【分類號(hào)】:O354.2
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