| 基于线化稳定性理论的后掠翼边界层内横流稳定性研究 |
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| 引用本文： | 左岁寒,杨永,李栋,李悦立.基于线化稳定性理论的后掠翼边界层内横流稳定性研究[J].航空计算技术,2009,39(4):34-36. |
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| 作者姓名： | 左岁寒 杨永 李栋 李悦立 |
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| 作者单位： | 西北工业大学,翼型叶栅国家重点实验室,陕西,西安,710072 |
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| 基金项目： | 西北工业大学科技创新基金重点项目"后掠机翼的附面层流动稳定性及层流控制"资助 |
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| 摘 要： | 采用Mack方法求解忽略曲率和压缩性的三维线化稳定性方程（Orr-Sommerfeld方程），针对无限展长后掠翼，计算分析边界层内不同波长横流驻波沿弦向的放大率，确定最不稳定波的波长。计算结果与参考文献中的实验结论和计算结果符合较好，表明该方法能够准确的预测出最不稳定波的波长，可以用来指导横流驻波主导下的后掠翼流动稳定性问题研究。
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| 关 键 词： | 线化稳定性方程 无限展长后掠翼 横流驻波 |
Study on Crossflow Instability of Boundary Layer on a Swept Wing based on Linear Stability Theory |
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| ZUO Sui-han,YANG Yong,LI Dong,LI Yue-li.Study on Crossflow Instability of Boundary Layer on a Swept Wing based on Linear Stability Theory[J].Aeronautical Computer Technique,2009,39(4):34-36. |
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| Authors: | ZUO Sui-han YANG Yong LI Dong LI Yue-li |
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| Institution: | ZUO Sui- han, YANG Yong, LI Dong, LI Yue- li(National Key Laboratory of Aerodynamic Design and Research ,Northwestern Polytechnical University, Xi＇an 710072, China) |
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| Abstract: | The three- dimensional linear stability equations which neglect wall curvature and compressibility are solved by using Mack method. Then the chord- wise amplification rates of cross- flow wave with different wavelength can be calculated and the most amplification stationary wavelength can be determined for an infinite swept wing. The results from present computation show good agreement with the experimental and computational results of the references. The accurate prediction of the most amplified stationary wavelength suggests that linear stability theory is suitable for the stability analysis on a swept wing when stationary cross- flow wave is the dominant structure. |
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| Keywords: | linear stability equations infinite swept wing cross- flow stationary wave |
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