| 一种基于谱方法的三维热声不稳定模型 |
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| 引用本文： | 李磊,孙晓峰.一种基于谱方法的三维热声不稳定模型[J].航空动力学报,2011,26(5):1017-1024. |
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| 作者姓名： | 李磊 孙晓峰 |
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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,北京,100191 |
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| 基金项目： | 国家自然科学基金，航空科学基金 |
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| 摘 要： | 研究流体的流动参数,包括热源热释放的周向不均匀分布对热声不稳定现象的影响,将欧拉方程进行线化处理之后,对轴向和径向方向进行基于切比雪夫多项式的谱离散,周向方向则进行基于傅里叶多项式的谱离散,建立了一种三维热声不稳定数值模型.通过对圆柱管道共振频率以及声场的求解,进行了一系列算例的验证,证实了该方法的可靠性,并且通过热释...
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| 关 键 词： | 周向非均匀 热声不稳定 谱方法 共振频率 线化欧拉方程 |
| 收稿时间： | 2010/12/8 0:00:00 |
| 修稿时间： | 2011/3/24 0:00:00 |
Three-dimensional thermoacoustic instability model based on spectral method |
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| LI Lei and SUN Xiao-feng.Three-dimensional thermoacoustic instability model based on spectral method[J].Journal of Aerospace Power,2011,26(5):1017-1024. |
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| Authors: | LI Lei and SUN Xiao-feng |
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| Institution: | LI Lei,SUN Xiao-feng(School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China) |
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| Abstract: | In order to investigate the effect of circumferential non-uniform fluid parameters and heat release on thermoacoustic instabilities,Chebyshev method was applied to axial and radial directions and Fourier method was applied to circumferential direction in the linear Euler equations.Resonant frequencies and acoustic fields of a duct were obtained by this method for validation and further investigations.At last,after some calculation for circumferential non-uniform heat release,it is verified that some symmetr... |
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| Keywords: | circumferential non-uniform thermoacoustic instability spectral method resonant frequency linear Euler equations |
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