Properties of Fine Scales in High Reynolds Number Turbulence

Scaling properties are one of the basic concepts used to study fully developed turbulence. We review here some recent experimental, numerical and theoretical results on the fine scale intermittency in high Reynolds number turbulence. In particular, we show that local scaling is consistent with experimental data. The scaling exponents take on a whole range of values, the most frequent ones being close to the value 1/3 predicted by Kolmogorov in 1941. Negative exponents are also obtained.