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求解非定常Ｎ－Ｓ方程，数值预测了深宽比Ｈ／Ｗ分别为０．１、０．３和０．５的单空腔直齿迷宫通道的内部流动，计算结果展示了流动结构的振荡及出口泄漏量下降和回升的波动。３种结构的密封效果优劣与泄漏量波动幅度大小相对应，其排列顺序是深宽比Ｈ／Ｗ分别为０．３、０．５和０．１的结构。还讨论了涡运动与涡合并、分离泡的迁移、射流的弯曲及对空腔壁面的冲击等复杂物理过程的内在联系，分析了射流冲击所产生的多种效应对增加能耗减小泄漏的作用。
Solving the unsteady N-S equation, the internal flow of a single-cavity spur-labyrinth channel with aspect ratio H / W of 0.1, 0.3 and 0.5 were predicted numerically. The calculated results show that the oscillation of the flow structure And the drop in exports and recovery fluctuations. The three kinds of structure of the seal effect of the quality of the amount of leakage and fluctuations in the size corresponding to the order of the aspect ratio H / W were 0.3,0.5 and 0.1 structure. The internal relations between vortex motion and vortex merging, the migration of separation bubble, the bending of jet and the impact on the cavity wall are also discussed. The effects of jet impact on the physical processes are analyzed. effect.