Evolution of the surface radius (blue) and the envelope mass (red) for a series of models with hydrodynamical effects included, similar to Fig. 2, but for larger initial envelope masses. Each panel shows a model with a given initial envelope mass, where the envelope masses range from 0.004 M_⊙ to 0.01 M_⊙. The change of the envelope mass reflects the fact that, once the outer layers exceed the escape velocity of the system, they are removed.