Figure 3

The radius of the particle R(t) versus time t for the same parameter values as in Fig. 2.

The (green) solid line is for the case , while the (black) dashed line is . For the case, we have that the speed of the boundary blows up at R_c = 1.32, corresponding to t_c = 400.98. The solution with a nonzero kinetic term follows that for very closely, except for times near the blow-up (inset). Here, the solution deviates away from the case, so that the moving boundary propagates inwards past the critical radius and through the blow-up regime. The speed of the boundary increases dramatically until the boundary reaches the centre and complete melting is achieved.