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Journal Articles Monthly Notices of the Royal Astronomical Society Year : 2020

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

Abstract

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.
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insu-03705163 , version 1 (21-07-2023)

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Daniel Mentiplay, Daniel J. Price, Christophe Pinte, Guillaume Laibe. A smoothed particle hydrodynamics algorithm for multigrain dust with separate sets of particles. Monthly Notices of the Royal Astronomical Society, 2020, 499, pp.3806-3818. ⟨10.1093/mnras/staa3171⟩. ⟨insu-03705163⟩
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