Comparison between PAMDEAS simulations with growth and fragmentation (GF-*-aO2-*, left) and simulations with growth, bouncing, and fragmentation with compaction (GBFc-*-aO2-*, right), up to t = 1 Myr. Grain sizes are given as a function of the distance from the star, with colour indicating the filling factor. Simulation parameters are indicated in each row. Black dots and dashed lines mark the time t = 50 kyr, providing a ‘snapshot’ of the size distribution at that moment.