Comparison of the physical structure at t_bm in simulations HD0 (red) and HD1 (blue). Left panel: volume density as a function of radius. In the middle panel, the solid and dashed lines represent the gas and dust temperature, respectively, shown as a function of volume density. Right panel: infall velocity as a function of volume density. The gray curves show the corresponding data from the KC model. The values of t_bm in simulations HD0 and HD1 are shown on top.