湿空气非平衡凝结对压气机叶栅性能影响的数值研究

Chinese Journal of Applied Mechanics(2016)

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Abstract
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.
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