MULTIGRAIN: A smoothed particle hydrodynamics algorithm for multiple small dust grains and gas

Abstract

We 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 low storage, requiring only an array of dust fractions and their derivatives defined for each resolution element.

13 pages, 8 figures. Accepted for publication in MNRAS

References in corpus (10)

• SPLASH: An interactive visualisation tool for Smoothed Particle Hydrodynamics simulations
• Modelling discontinuities and Kelvin-Helmholtz instabilities in SPH
• Inviscid SPH
• Vertical Shearing Instabilities in Radially Shearing Disks: The Dustiest Layers of the Protoplanetary Nebula
• Dust and gas mixtures with multiple grain species - a one-fluid approach
• Is the dust-to-gas ratio constant in molecular clouds?
• Grand challenges in protoplanetary disc modelling
• Three-Dimensional Simulations of Kelvin-Helmholtz Instability in Settled Dust Layers in Protoplanetary Disks
• Integration of Particle-Gas Systems with Stiff Mutual Drag Interaction
• On dust entrainment in photoevaporative winds

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