| 机匣处理的非定常数值分析 |
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| 引用本文： | 屠宝锋,胡骏,王永明.机匣处理的非定常数值分析[J].航空动力学报,2007,22(9):1475-1480. |
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| 作者姓名： | 屠宝锋 胡骏 王永明 |
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| 作者单位： | 南京航空航天大学 能源与动力学院, 南京 210016 |
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| 摘 要： | 采用非定常计算方法对轴流式压气机中机匣处理的扩稳效果进行了研究.进行了某型风扇斜缝带背腔式机匣处理在单转子和单级环境下及Rotor37轴向缝式机匣处理的数值计算, 分析了下游静子的存在对机匣处理数值模拟结果的影响.结果表明该计算方法能够模拟出机匣处理的非定常作用, 并且只有当危险截面位于叶尖附近时, 机匣处理才有扩稳的能力.发现单转子环境下的计算不能准确地表现出机匣处理的真实作用, 下游静子的存在会导致上游转子危险截面位置的改变.
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| 关 键 词： | 航空、航天推进系统 机匣处理 非定常 数值分析 危险截面 |
| 文章编号： | 1000-8055(2007)09-1475-06 |
| 收稿时间： | 2006/8/14 0:00:00 |
| 修稿时间： | 2006年8月14日 |
Unsteady numerical analysis for casing treatment |
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| TU Bao-feng,HU Jun and WANG Yong-ming.Unsteady numerical analysis for casing treatment[J].Journal of Aerospace Power,2007,22(9):1475-1480. |
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| Authors: | TU Bao-feng HU Jun and WANG Yong-ming |
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| Institution: | College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
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| Abstract: | The improved effect of casing treatment in axial compressors was studied by using an unsteady simulation method.Numerical calculation was performed for the cavity casing treatment with oblique slots under one-rotor and one-stage environment as well as for axial slots casing treatment of Rotor 37.The influence of downstream stator upon casing treatment simulation was also analyzed.The results show that,this computation method could simulate unsteady casing treatment,but the casing treatment cannot extend the stall margin of a compressor until the dangerous section is near the tip of rotor blade.It's found that the real role of casing treatment cannot be manifested accurately under one-rotor environment,and the presence of downstream stator would change the dangerous section of upstream rotor. |
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| Keywords: | aerospace propulsion system casing treatment unsteady numerical analysis dangerous section |
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