Loading...
Please wait, while we are loading the content...
Similar Documents
Isotropy of small scale turbulence
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Antonia, R. A. Kim, J. |
| Copyright Year | 1992 |
| Description | The degree to which local isotropy is satisfied has been examined using direct numerical simulations for a fully developed channel flow. Attention is mainly given to the high wavenumber part of vorticity and temperature derivative spectra. The ratio of these spectra and their isotropic values depends on the particular quantity considered, the departure from isotropy being more pronounced for the temperature derivative than for the vorticity. When the Kolmogorov-normalized wavenumber is sufficiently large, isotropy is satisfied provided the (Kolmogorov-normalized) mean strain rate is sufficiently small. This result appears to be independent of the quantity considered and of the Reynolds number. |
| File Size | 591788 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19940010279 |
| Archival Resource Key | ark:/13960/t5n925f76 |
| Language | English |
| Publisher Date | 1992-11-01 |
| Access Restriction | Open |
| Subject Keyword | Fluid Mechanics And Heat Transfer Isotropy Turbulence Turbulent Flow Reynolds Number Vorticity Isotropic Turbulence Channel Flow Kolmogorov Theory Strain Rate Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
