On the probability density function of velocity gradients in fully developed turbulence
A simple fluctuation argument à la Landau suggests why probability density functions of velocity gradients of turbulent velocity fields are often found to have a close to exponential tail. The detailed functional form depends on the assumptions made concerning the intermittency.
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| Veröffentlicht in: | Fluid dynamics research 1991-10, Vol.8 (1), p.139-142 |
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| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A simple fluctuation argument à la Landau suggests why probability density functions of velocity gradients of turbulent velocity fields are often found to have a close to exponential tail. The detailed functional form depends on the assumptions made concerning the intermittency. |
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| ISSN: | 0169-5983 1873-7005 1873-7005 |
| DOI: | 10.1016/0169-5983(91)90038-K |