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On-line Access: 2025-05-30
Received: 2024-03-09
Revision Accepted: 2024-07-25
Crosschecked: 2025-05-30
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Yifu LUO, Qiang DU, Zengyan LIAN, Guang LIU, Lei XIE, Qingzong XU. Numerical investigation of the transient process of a cover-plate pre-swirl system[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2400134 @article{title="Numerical investigation of the transient process of a cover-plate pre-swirl system", %0 Journal Article TY - JOUR
过渡态下盖板式预旋系统的数值模拟研究机构:1中国科学院工程热物理研究所,中国北京,100190;2中国科学院轻型涡轮动力全国重点实验室,中国北京,100190;3中国科学院大学,航空宇航学院,中国北京,100048;4青岛航空技术研究院,中国青岛,266400;5中国科学院先进燃气轮机实验室,中国北京,100190;6中国科学院先进能源动力重点实验室,中国北京,100190 目的:本文旨在探究过渡态下盖板式预旋系统内的流动换热规律和系统参数的响应特性,为过渡态下航空发动机预旋系统的设计提供参考。 创新点:1.针对盖板式预旋系统,建立了三维全瞬态数值模拟方法,成功模拟了过渡态下预旋系统的工作情况;2.对比分析了不同上游来流边界条件的影响,获得了过渡态下盖板式预旋系统内的参数响应特性。 方法:1.通过三维全瞬态数值模拟方法,模拟过渡过程中盖板式预旋系统内的流动情况;2.结合理论分析,探究过渡过程中预旋系统的流动换热机理。 结论:1.由于预旋系统入口和出口的波动,系统内的滞留流量经历振荡后才稳定到一个恒定值。2.在不同的进气函数条件下,系统内参数响应曲线的增长率有所不同;这表明在准稳态计算中,考虑非线性增长的影响至关重要。3.由于宏观质量输运波动引起的可压缩效应,预旋系统的实际温降表现出明显的超调现象。4.对于不同的进气压力脉动频率,低频脉动下预旋系统实际温降的最大偏差更大,这对涡轮叶片的供气品质有潜在影响。 关键词组: Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article
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