Flow coherent structures and frequency signature: application of the dynamic modes decomposition to open cavity flow
Flow coherent structures and frequency signature: application of the dynamic modes decomposition to open cavity flow
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DOI：
10.1088/1742-6596/318/4/042036
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发表时间：
2011-12
期刊：
影响因子：
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通讯作者：
F. Lusseyran;F. Guéniat;J. Basley;C. Douay;L. Pastur;Thierry Faure;P. Schmid
中科院分区：
文献类型：
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作者：
F. Lusseyran;F. Guéniat;J. Basley;C. Douay;L. Pastur;Thierry Faure;P. Schmid
碰撞流的边界条件及其引起的自持续振荡会显著降低其动态维数。光谱特征与显著的空间相干结构有关。动态模态分解（DMD）使直接提取非线性饱和流的动力特性成为可能。我们应用DMD来突出实验开腔流动的纵向和横向结构的光谱贡献。
The dynamic dimension of an impinging flow may be significantly reduced by its boundary conditions and self-sustained oscillations they induce. The spectral signature is associated with remarkable spatial coherent structures. Dynamic modes decomposition (DMD) makes it possible to directly extract the dynamical properties of a non-linearly saturated flow. We apply DMD to highlight the spectral contribution of the longitudinal and transverse structures of an experimental open-cavity flow.