| NASA67级非定常流场的频域分析 |
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| 引用本文： | 赵军,柳阳威,刘宝杰.NASA67级非定常流场的频域分析[J].航空动力学报,2007,22(8):1371-1377. |
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| 作者姓名： | 赵军 柳阳威 刘宝杰 |
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| 作者单位： | 北京航空航天大学,能源与动力工程学院,北京,100083 |
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| 摘 要： | 通过对NASA67级典型截面非定常流场的快速傅立叶分解,在频域内对转静干扰效应、交界面典型脉动量的周向波形以及周期边条的相位延迟角进行了分析.同时可以看到一些在时域中很难直观看到的现象.最后通过对比采用前5阶谐波合成出来的确定应力和非定常计算合成出来的确定应力,分析了非线性谐波法在确定应力建模方面的可行性及优势.
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| 关 键 词： | 航空、航天推进系统 频域分析 确定应力 非线性谐波法 非定常计算 非定常流场 频域分析 flow field unsteady 优势 力建模 谐波法 非线性 非定常计算 确定应力 合成 现象 延迟角 相位 边条 周期 波形 动量 交界面 干扰效应 |
| 文章编号： | 1000-8055(2007)08-1371-07 |
| 收稿时间： | 2006/7/31 0:00:00 |
| 修稿时间： | 2006年7月31日 |
Frequency-domain analysis of NASA67 unsteady flow field |
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| ZHAO Jun,LIU Yang-wei and LIU Bao-jie.Frequency-domain analysis of NASA67 unsteady flow field[J].Journal of Aerospace Power,2007,22(8):1371-1377. |
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| Authors: | ZHAO Jun LIU Yang-wei and LIU Bao-jie |
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| Institution: | School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China;School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Based on fast fourier transformation for the typical profile of NASA67 unsteady flow field,the rotor-stator interactions,the circumferential distributions of typical unsteady perturbations at the rotor-stator interface and the inter-blade phase angle were analyzed in the frequency-domain.Also,some phenomena difficult to observe in time-domain were visualized in frequency-domain.Finally,the deterministic stresses from five-order harmonic synthesis and unsteady simulation were compared,meanwhile the feasibility and advantage of nonlinear harmonic method in modeling the deterministic stresses were analyzed. |
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| Keywords: | aerospace propulsion system frequency-domain analysis deterministic stresses nonlinear harmonic method unsteady simulation |
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