Mark Hutchison - January 19, 2018

Making SPH simulations of grain-size distributions more self-consistent

I will present a new algorithm, MULTIGRAIN, for modelling the dynamics of an
entire population of small dust grains immersed in gas, typical of conditions
that are found in molecular clouds and protoplanetary discs. The MULTIGRAIN
method is more accurate than single-phase simulations because the gas
experiences a backreaction from each dust phase and communicates this change to
the other phases, thereby indirectly coupling the dust phases together. The
MULTIGRAIN  method is fast, explicit and requires less memory than simulating
individual dust phases in separate simulations.