Water-ion densities and velocities in runs A and C, illustrating the influence of the scaling factor. (a) Water-ion density, n_wi, as a function of r in run A for different radial directions, following the axes of the coordinate system as indicated in the legend. (b) n_wi for run C. (c) The radial-velocity component υ_r,wi for run A. (d) υ_rwi for run C. The legend in panel a also applies to panels a to d. (e) Velocity components in the x−z plane for run A. (f) Velocity components in the x−z plane for run C. (g) Velocity components in the x−y plane for run A. (h) Velocity components in the x−y plane for run C. The axis limits for r, x, y, and z are different for the different scalings. The dotted lines in panels c and d indicate .