Computer simulations of ballistic driven accretions on seeds of different sizes were carried out. The results, in agreement with previous work reported for the general case of seeds of particle size, show that the kinematics of accretion does not depend on the size of the seed. Specific morphological properties (growth angle and channel orientation) are investigated and found to depend only on the elementary aggregation process.

• Received 18 June 1991

DOI:https://doi.org/10.1103/PhysRevA.44.8313