| 进气温度畸变瞬变条件下发动机稳定性数值模拟 |
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| 引用本文： | 张明川,唐狄毅.进气温度畸变瞬变条件下发动机稳定性数值模拟[J].西北工业大学学报,1997,15(3):399-403. |
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| 作者姓名： | 张明川 唐狄毅 |
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| 作者单位： | 西北工业大学 |
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| 摘 要： | 用分析压气机工作稳定性的一维非线性模型，通过龙格库塔数值方法，模拟具有单转子多级高转速压气机的涡喷发动机在稳态进口总温畸变、总温突升以及组合情况下的工作稳定性。研究了温度畸变条件下发动机稳定工作裕度的损失及不稳定工作的响应过程，对总温畸变问题给出了定性和定量的结果分析。
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| 关 键 词： | 航空发动机，温度畸／瞬变工作稳定性，数值模拟 |
The Stability of an Axial Flow Compressor with Inlet Spatial Temperature Distortion and Transients |
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| Abstract: | A stagebystage onedimensional mathematical model is used to analyze the effect of spatial temperature distortion, temperature transients and combined distortion on the dynamic response of a turbojet engine. The continuity, momentum and energy equations are written for every stage, and solved by fourthorder RungeKutta integral method. The variations of stage pressure rise and efficiency with flow coefficient are accounted for by an actuatordisc model, together with a firstorder damping correction. The simulation indicates that smaller circumferential extent and greater magnitude of distortion resumt in more loss in surge margin. The ramp rate is the most sensitive parameter when inlet rapid temperature rise is present. |
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| Keywords: | temperature distortion temperature transient compressor stability simulation |
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