Open AccessSmoothed Particle Hydrodynamics with particle splitting, applied to self‐gravitating collapse
Author(s) -
Kitsionas S.,
Whitworth A.P.
Publication year - 2002
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2002.05115.x
Subject(s) - smoothed particle hydrodynamics , physics , particle (ecology) , classical mechanics , sort , test particle , adaptive mesh refinement , mechanics , statistical physics , oceanography , computer science , information retrieval , geology , thermodynamics
We describe and demonstrate a method for increasing the resolution locally in a Smoothed Particle Hydrodynamic (SPH) simulation, by splitting particles. We show that in simulations of self‐gravitating collapse (of the sort that are presumed to occur in star formation) the method is stable, and affords great savings in computer time and memory. When applied to the standard Boss & Bodenheimer test – which has been shown to depend critically on fulfilment of the Jeans Condition – the results are comparable both with those obtained using Adaptive Mesh Refinement, and with those obtained using a standard high‐resolution SPH simulation, but they are achieved with considerably less computational resource. Further development and testing is required before the method can safely be applied to more general flows.