A smoothed particle hydrodynamics algorithm for multigrain dust with separate sets of particles

Daniel Mentiplay, Daniel J. Price, Christophe Pinte, Guillaume Laibe

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)


We present a method for simulating the dynamics of a mixture of gas and multiple species of large Stokes number dust grains, typical of evolved protoplanetary discs and debris discs. The method improves upon earlier methods, in which only a single grain size could be represented, by capturing the differential backreaction of multiple dust species on the gas. This effect is greater for large dust-to-gas ratios that may be expected in the later stages of the protoplanetary disc life. We benchmark the method against analytic solutions for linear waves, drag, and shocks in dust-gas mixtures, and radial drift in a protoplanetary disc showing that the method is robust and accurate.

Original languageEnglish
Pages (from-to)3806-3818
Number of pages13
JournalMonthly Notices of the Royal Astronomical Society
Issue number3
Publication statusPublished - 1 Dec 2020


  • Hydrodynamics
  • Methods: numerical
  • Protoplanetary discs

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