GRAPESPH with fully periodic boundary conditions: fragmentation of molecular clouds
- 21 November 1997
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 292 (1) , 11-18
- https://doi.org/10.1093/mnras/292.1.11
Abstract
A method of adapting smoothed particle hydrodynamics (SPH) with periodic boundary conditions for use with the special-purpose device GRAPE is presented. GRAPE (GRAvity PipE) solves the Poisson and force equations for an N-body system by direct summation on a specially designed chip, and in addition returns the neighbour list for each particle. Owing to its design, GRAPE cannot treat periodic particle distributions directly. This limitation of GRAPESPH can be overcome by computing a correction force for each particle due to periodicity (Ewald correction) on the host computer using a PM-like method.Keywords
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