Abstract:
We propose a simple modification, the Gaussian truncation, of the
probability density function which was obtained by Beck (2001) to fit the experimental
distribution of fluid particle acceleration component from fully developed fluid
turbulence inspired by the framework of nonextensive statistical mechanics with the
underlying gamma distribution of the model parameter. The modified distribution is
given a phenomenological treatment and provides a good fit to new experimental results
on the acceleration of fluid particle reported by Crawford, Mordant, and Bodenschatz.
We compare the results with the new fit which was recently obtained by Beck (2002)
with the use of the underlying log-normal distribution of the model parameter.
