Logarithm of the numerical radial profile of the disk density at t′=850 000 yr (dots). The density profile at the beginning of the simulation is also plotted (black triangles). The density at t = t′ matches the self-similar solution (Eq. (36)) with a parameter AU and a viscosity timescale yr. The evolution of this disk after a time is also plotted (bottom, artificially shifted by −3) together with the analytical prediction (dashed line). The fit density profile at t = t′ is plotted twice (in the top and bottom curves) as a full line for clarity.