湿空气非平衡凝结对压气机叶栅性能影响的数值研究
发布时间：2018-07-17 21:13
【摘要】：跨音速流动条件下湿空气中的水蒸气由于快速膨胀而发生非平衡凝结,凝结潜热与跨音速气流耦合会显著改变流场结构。本文建立了湿空气非平衡凝结流动的数学物理模型,对三种工况下压气机叶栅内湿空气凝结流动进行计算分析。计算结果表明:湿空气压气机叶栅流动中,湿空气中水蒸气有可能发生非平衡凝结从而对叶栅通道内的流动产生强烈影响,改变流场内的激波结构,叶栅内压力系数减小最大幅度由1.38减小到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.
【作者单位】： 西安科技大学;陕西省建筑科学研究院;
【基金】：西安科技大学博士启动金(2014QDJ012);西安科技大学培育基金(201345)
【分类号】：O354.2
本文编号：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.
【作者单位】： 西安科技大学;陕西省建筑科学研究院;
【基金】：西安科技大学博士启动金(2014QDJ012);西安科技大学培育基金(201345)
【分类号】：O354.2
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