Unstable Eigenvalues Associated with Inviscid Fluid Flows

Unstable Eigenvalues Associated with Inviscid Fluid Flows
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与无粘流体流动相关的不稳定特征值

DOI:
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发表时间:
2000
期刊:
影响因子:
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通讯作者:
V. Yudovich
V. Yudovich
中科院分区:
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文献类型:
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作者:
S. Friedlander;M. Vishik;V. Yudovich

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抽象的。一个例子是一类周期性的,二维的,无粘流体流动的稳定性谱包含离散不稳定的特征值和不稳定的本质谱。平均法被用来证明不稳定特征值的存在性。对于这样的流动,谱不稳定性意味着非线性不稳定性。
Abstract. An example is presented of a class of periodic, two-dimensional, inviscid fluid flows where the stability spectrum contains both discrete unstable eigenvalues and an unstable essential spectrum. The method of averaging is used to demonstrate the existence of unstable eigenvalues. For such flows spectral instability implies nonlinear instability.