Theory for the off-diagonal element of dissipation in homogeneous shear turbulence
| ISSN: |
1089-7666
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| Source: |
AIP Digital Archive
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| Topics: |
Physics
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| Notes: |
The off-diagonal element, ε12, of the energy dissipation rate tensor is calculated from straight-forward spectral considerations. The derivation is for homogeneous shear flows. Account is taken of the difference between energy spectra and stress spectra, and the dissipation range of the spectra is taken from recent high-resolution numerical simulations. Emphasized, is the theoretically derived power law describing the decrease of ε12/ε with increasing Reynolds number at large Reynolds number. For moderate Reynolds number, the theoretical ε12/ε is compared with numerical simulations. For large Reynolds number, the theory implies local isotropy.
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| Type of Medium: |
Electronic Resource
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| URL: |