The Unstable Spectrum of Oscillating Shear Flows

The Unstable Spectrum of Oscillating Shear Flows
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DOI:
10.1137/s0036139997327575
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发表时间:
1999-05
期刊:
SIAM J. Appl. Math.
影响因子:
--
通讯作者:
L. Belenkaya;S. Friedlander;V. Yudovich
L. Belenkaya;S. Friedlander;V. Yudovich
中科院分区:
其他
文献类型:
--
作者:
L. Belenkaya;S. Friedlander;V. Yudovich

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本文给出了关于正弦剪切流线性化的欧拉方程的不稳定谱的完整描述。谱问题的处理解析和数值。对于一般的快速振荡的轮廓,使用平均的方法来确定光谱渐近性。这种流动总是不稳定的。
A complete description is given for the unstable spectrum of the Euler equation linearized about shear flows with sinusoidal profiles. The spectral problem is treated analytically and numerically. The spectral asymptotics are determined using the method of averaging for general rapidly oscillating profiles. Such flows are always unstable.