  We have developed a new numerical technique for simulating dusty-gas flows.
Our unique code incorporates gas hydrodynamics, self-gravity and dust drag to
follow the dynamical evolution of a dusty-gas medium. We have incorporated
several descriptions for the drag between gas and dust phases and can model
flows with submillimetre, centimetre and metre size "dust". We present
calculations run on the APAC* supercomputer following the evolution of the dust
distribution in the pre-solar nebula. *Australian Partnership for Advanced
Computing
