The research on the sealing problems is of great significance in the design of turbines and aircraft engines, with the constant pursuit of high thrust ratio and low fuel consumption. A large number of experimental studies give information that the brush seal not only has good sealing characteristics, high sealing efficiency, but also has low manufacturing cost and simple structure.^1–6 The leakage of the brush seal is only 10%–20% of the same level of a labyrinth seal. The actual application shows that by just using a brush seal instead of a traditional labyrinth seal at one or several critical parts can make the engine’s thrust increase by 1%–3% and the fuel consumption decrease by 3%–5%.^7–9 Therefore, brush seals have great potential for improving engine performance.^10,11

中文翻译：

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基于流固耦合方法的刷式密封泄漏性能预测

密封问题的研究对于不断追求高推力比和低油耗的涡轮机和航空发动机的设计具有重要意义。大量实验研究表明，刷式密封不仅具有良好的密封特性、密封效率高，而且制造成本低、结构简单。^1～6刷式密封的泄漏量仅为同级迷宫密封的10%～20%。实际应用表明，在一个或几个关键部位采用刷式密封代替传统的迷宫式密封，可使发动机的推力提高1%~3%，油耗降低3%~5%。^7-9因此，刷式密封件在提高发动机性能方面具有巨大潜力。^10,11