多重尺度法在平面Couette流稳定性分析中的应用*
The Application of Multi-Scale Perturbation Method to the Stability Analysis of Plane Couette Flow
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摘要: 本文用文[3]所建议的多重尺度法分析了经过修正的平面Couette流动的线性稳定性性质。在平面Couette流的分析中,用多重尺度法可以找到不稳定的Tollmien-Schlichting波,但却不能找到最不稳定的模态,通过与文[3]相比较,本文对这种方法进行了探讨。Abstract: This paper applies the multi-scale perturbation method suggested by Ref[3] to investigate the linear stability behavior of distorted plane Couette.flow.Using thismethod,the unstable Tollmien-Schlichting wave in plane Couette flow can be found,but not the most unstable mode.By comparing the results of this paper with those ofRef.[3],the effectiveness of this method is investigated.
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Key words:
- stability /
- multi-scale perturbation method /
- bifurcation frominfinity
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[1] 周哲玮,经过修正的层流流动的流动稳定性问题(I),应用数学和力学,10(2)(3)(4)(1989),115-129;231-238;285-295. [2] 周哲玮,经过修正的平面Couette流的非线性稳定性研究,应用数学和力学.12(5)(1991),415-419. [3] 周哲玮,非定常修正下平面Poiseuille流动的线性稳定性性质,应用数学和力学,12(6)(1991),509-514.
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