POD and Wavelet Analysis of Coherent Structures in a Turbulent Mixing Layer.

1997 ◽  
Vol 63 (610) ◽  
pp. 2001-2008 ◽  
Author(s):  
Hitoshi ISHIKAWA ◽  
Masaru KIYA ◽  
Osamu MOCHIZUKI ◽  
Hiroshi MAEKAWA
Keyword(s):  
Wavelet Analysis ◽  
Coherent Structures ◽  
Turbulent Mixing ◽  
Mixing Layer ◽  
Turbulent Mixing Layer

Wavelet analysis of shearless turbulent mixing layer

2021 ◽  
Vol 33 (2) ◽  
pp. 025109
Author(s):  
T. Matsushima ◽  
K. Nagata ◽  
T. Watanabe
Keyword(s):  
Wavelet Analysis ◽  
Turbulent Mixing ◽  
Mixing Layer ◽  
Turbulent Mixing Layer

Reconstruction of large coherent structures from SPIV measurements in a forced turbulent mixing layer

2005 ◽  
Vol 39 (4) ◽  
pp. 761-770 ◽  
Author(s):  
E. Kit ◽  
O. Krivonosova ◽  
D. Zhilenko ◽  
D. Friedman
Keyword(s):  
Coherent Structures ◽  
Turbulent Mixing ◽  
Mixing Layer ◽  
Turbulent Mixing Layer

The interaction between the mean flow and coherent structures in turbulent mixing layers

1994 ◽  
Vol 260 ◽  
pp. 81-94 ◽  
Author(s):  
J. Cohen ◽  
B. Marasli ◽  
V. Levinski
Keyword(s):  
Velocity Profile ◽  
Coherent Structures ◽  
Turbulent Mixing ◽  
Mixing Layer ◽  
Mixing Layers ◽  
Mean Flow ◽  
Mean Velocity ◽  
Turbulent Mixing Layer ◽  
Self Similar ◽  
The Mean

The nonlinear interaction between the mean flow and a coherent disturbance in a two-dimensional turbulent mixing layer is addressed. Based on considerations from stability theory, previous experimental results, in particular the modification of the mean velocity profile, the peculiar growth of the forced shear-layer thickness and the spatial growth of the disturbance amplitude, are explained. A model that assumes a quasi-parallel mean flow having a self-similar mean velocity profile is developed. The model is capable of predicting the downstream evolution of turbulent mixing layers subjected to external excitations.

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