  We investigate test-particle diffusion in dynamical turbulence based on a
numerical approach presented before. For the turbulence we employ the nonlinear
anisotropic dynamical turbulence model which takes into account wave
propagation effects as well as damping effects. We compute numerically
diffusion coefficients of energetic particles along and across the mean
magnetic field. We focus on turbulence and particle parameters which should be
relevant for the solar system and compare our findings with different
interplanetary observations. We vary different parameters such as the
dissipation range spectral index, the ratio of the turbulence bendover scales,
and the magnetic field strength in order to explore the relevance of the
different parameters. We show that the bendover scales as well as the magnetic
field ratio have a strong influence on diffusion coefficients whereas the
influence of the dissipation range spectral index is weak. The best agreement
with solar wind observations can be found for equal bendover scales and a
magnetic field ratio of $\delta$B/B0 = 0.75.
