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- W4300575307 abstract "We present MULTIGRAIN, an algorithm for simulating multiple phases of small dust grains embedded in a gas, building on our earlier work in simulating two-phase mixtures of gas and dust in SPH (Laibe & Price 2012a,b; Price & Laibe 2015). The MULTIGRAIN method (Hutchison, Price & Laibe 2018) 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. We demonstrate the MULTIGRAIN algorithm on test problems related to the settling of dust in the discs of gas around young stars, where solar systems are born. Finally I will discuss possible extensions of the method to incorporate both large and small grains, together with recent improvements in our numerical techniques for gas and dust mixtures. In particular, I will show how the 'overdamping' problem identified by Laibe & Price (2012a) can be solved." @default.
- W4300575307 created "2022-10-03" @default.
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- W4300575307 date "2018-05-31" @default.
- W4300575307 modified "2023-09-27" @default.
- W4300575307 title "MULTIGRAIN: Simulating mixtures of multiple dust grains and gas with SPH" @default.
- W4300575307 doi "https://doi.org/10.48550/arxiv.1806.00037" @default.
- W4300575307 hasPublicationYear "2018" @default.
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