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On the unsteady behavior of turbulence models
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10.1063/1.3121303
/content/aip/journal/pof2/21/4/10.1063/1.3121303
http://aip.metastore.ingenta.com/content/aip/journal/pof2/21/4/10.1063/1.3121303
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Schematic of a discretized energy cascade. The solid arrows indicate the energy fluxes between neighboring wavenumber shells. The dashed lines indicate the nonlocal fluxes between spectrally remote shells. Note that a similar picture can be found in a paper by Lumley (Ref. 11).

Image of FIG. 2.
FIG. 2.

Linear response functions (left) and (right) for the multiple-scale model based on the Kovaznay spectral closure (6). The 7 curves in each graph correspond to models with spectral shells and increases in the direction of the arrow. The theoretical amplitude prediction is indicated by a straight line. Also shown are the results of EDQNM simulations (symbols). The frequency is normalized by the large-scale frequency .

Image of FIG. 3.
FIG. 3.

Frequency response function for the model based on the Kovaznay closure (8) (left) and for the model based on the Ellison closure (11) (right). The 7 curves in each graph correspond to and increases in the direction of the arrow. The theoretical prediction is indicated by the straight lines. Also shown are the results of EDQNM simulations (symbols).

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/content/aip/journal/pof2/21/4/10.1063/1.3121303
2009-04-22
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: On the unsteady behavior of turbulence models
http://aip.metastore.ingenta.com/content/aip/journal/pof2/21/4/10.1063/1.3121303
10.1063/1.3121303
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