旋转总压畸变对压气机稳定性影响的二维不可压缩模型
Two-dimensional incompressible model of effects of rotating inlet distortion on flow instability in compression systems
-
摘要: 以Moore-Greitzer模型为基础, 发展了一个预测轴流压缩系统动态失速特性及进气非均匀性影响的二维不可压缩理论模型, 并利用该模型计算分析了进气总压畸变的幅值和旋转频率对下游压气机稳定性的影响.计算结果表明:进气总压畸变的幅值和旋转频率对压缩系统的动态失速特性和稳定性都有强烈的影响, 旋转频率对旋转失速边界和喘振边界的影响类似.但是, 对应系统稳定裕度损失最大值的"危险"响应频率强烈地依赖于其旋转失速的传播频率.Abstract: Based on Moore-Greitzer model, a two-dimensional incompressible model was developed to predict the post stall transient and effects of nonuniform inlet flow on flow stability of compression systems, and calculations were presented in detail to predict the post stall transient behavior and the onset of flow instabilities in axial compression systems with rotating inlet total pressure distortion.It's found that both the inlet distortion amplitude and rotating frequency have a strong effect on the stability and post stall transient behavior, and the rotating frequency has the same strong influence on the onset of surge as the influence on the onset of rotating stall.But the resonant response frequency strongly depends on the frequency at which the stall cell rotates.
-
Key words:
- compression system /
- stability /
- rotating stall /
- surge /
- rotating total pressure distortion /
- dangerous frequency
点击查看大图
计量
- 文章访问数: 1692
- HTML浏览量: 0
- PDF量: 450
- 被引次数: 0