Subgrid-scale backscatter in turbulent and transitional flows

@inproceedings{Piomelli1991SubgridscaleBI,
  title={Subgrid-scale backscatter in turbulent and transitional flows},
  author={Ugo Piomelli and William H. Cabot and Parviz Moin and Sangsan Lee},
  year={1991}
}
Most subgrid‐scale (SGS) models for large‐eddy simulations (LES) are absolutely dissipative (that is, they remove energy from the large scales at each point in the physical space). The actual SGS stresses, however, may transfer energy to the large scales (backscatter) at a given location. Recent work on the LES of transitional flows [Piomelli et al., Phys. Fluids A 2, 257 (1990)] has shown that failure to account for this phenomenon can cause inaccurate prediction of the growth of the… CONTINUE READING

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