The rotational energy 

Discussion

In Comparison with Goodman et al. (1993)

Rotational Motion and Its Implication

As \citet{Goodman1993} have warned, even tough it is possible to derive the properties of rotational motions based on the fitted velocity gradient, the assumption that the velocity gradient is fully the result of the rotational motions can be wrong.  \citet{Burkert2000} further pointed out that the observed velocity gradient can be due to the coincident distribution of a turbulent velocity field, and that the observed velocity distribution can be but characteristic of the turbulent motion at the size scale of the structure in question.
However, in this paper, the properties are measured for droplets, which are themselves subsonic in line width.

The Effects of Differential Rotation and Varying Density Profiles