Orthogonal Decomposition of the Axisymmetric Jet Mixing Layer Including Azimuthal Dependence

Orthogonal Decomposition of the Axisymmetric Jet Mixing Layer Including Azimuthal Dependence
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包括方位角依赖性的轴对称射流混合层的正交分解

DOI:
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发表时间:
1987
期刊:
影响因子:
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通讯作者:
W. George
W. George
中科院分区:
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文献类型:
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作者:
M. Glauser;W. George

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1967年LUMLEY [4]提出了一种客观确定相干结构的方法。该方法使用正交分解从两点速度测量中提取特征向量,最低阶特征向量代表最大的结构。如果流是均匀的、平稳的或周期性的,则正交分解简化为谐波分解。因此,在将Lumley正交分解应用于非齐次方向之前,这些方向与谐波本征函数拟合。
In 1967 LUMLEY [4] proposed an approach to the objective determination of coherent structures. The method uses an orthogonal decomposition to extract eigenvectors from two point velocity measurements, the lowest order eigenvector representing the largest structure. If the flow is homogenous, stationary or periodic the orthogonal decomposition reduces to a harmonic decomposition. These directions therefore are fit with the harmonic eigenfunctions before applying Lumley’s orthogonal decomposition to the inhomogeneous directions.