Abstract
Measurements of the isotropic transport equation for the mean energy dissipation rate in decaying grid turbulence indicate that the destruction term increases linearly with the Taylor microscale Reynolds number R-lambda whereas the skewness of the longitudinal velocity derivative is approximately independent of R-lambda. As a consequence, self-preservation based on the Taylor microscale lambda is strictly valid when R-lambda is constant during decay. The high wavenumber part of the vorticity spectrum scales approximately on the Kolmogorov microscale, thus excluding the possibility of a lambda-based similarity for all scales of motion except when R-lambda is constant.
Original language | English |
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Pages (from-to) | N/A |
Journal | Journal of Turbulence |
Volume | 3 |
DOIs | |
Publication status | Published - 2002 |