Density color maps overplotted with the velocity streamlines for one of our representative models, b01.a99.2D, up to a radius of 1000r_g showing the outflows extending to larger scales (eventually to the outer boundary of the computational domain) at time t = 500, 750, and 1000t_g. The equatorial outflow marked by the outward velocity streamline expands in time as the simulation proceeds. Shocks are visible in the velocity field structure.