(a) Height–time profile of the core of the flux rope before and after the first eruption at t = 27.9 hr. The height is calculated by tracking the dark region (flux rope) in the central meridional plane. (b) Same as (a), but for the second eruption at t = 34.7 hr. Time evolution of velocity, (c)–(d), and acceleration, (e)–(f), for both eruptions in the simulation. The red (blue) circles are used to represent simulation data before (after) the eruption.