| 摘要: |
| 为研究和分析进气压力畸变对发动机稳定性的影响,发展了一种用于分析进气畸变对燃气涡轮发动机稳定性影响的计算模型和方法。有关叶片作用力、功、放气量等参数采用源项来处理。该模型考虑了子压气机之间质量和动量的周向掺混,克服了传统平行压气机模型的缺陷。利用该模型预测的某涡扇发动机和某三级风扇的畸变敏感系数与试验结果吻合较好。 |
| 关键词: 总压畸变 总温畸变 发动机稳定性 敏感系数 |
| DOI： |
| 分类号:V235 |
| 基金项目: |
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| Model of the effect of inlet flow distortions on engine stability |
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HUANG Shun-zhou,HU Jun
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1.Coll.of Energy and Power Engineering,Nanjing Univ.of Aeronautics and Astronautics,Nanjing 210016,China;2.China Gas Turbine Establishment,Chengdu 610500,China
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| Abstract: |
| In order to investigate and analysis the effect of the distortion on the engine stability,a model of the effect of inlet distortions on the stability is presented.In this model,the blade force,work and the bleed air are treated as the source terms.The model takes into account the mixing of quality and the momentum between the sub-compressors in the angular regions,thus overcomes the shortcomings of the traditional parallel compressors model.There is a good agreement between the numerical results and the experimental data of sensitivity coefficients to the distortion of a turbofan engine and a three-stage fan. |
| Key words: Total pressure distortion Total temperature distortion Engine stability Sensitivity coefficient |
