  We investigate the fluctuations of anisotropic transverse flow due to the
finite number of scatterings in a two-dimensional system of massless particles.
Using a set of initial geometries from a Monte Carlo Glauber model, we study
how flow coefficients fluctuate about their mean value at the corresponding
eccentricity, for several values of the scattering cross section. We also show
how the distributions of the second and third event planes of anisotropic flow
about the corresponding participant plane in the initial geometry evolve as a
function of the mean number of scatterings in the system.
