Grapesph: cosmological smoothed particle hydrodynamics simulations with the special-purpose hardware GRAPE
- 11 February 1996
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 278 (4) , 1005-1017
- https://doi.org/10.1093/mnras/278.4.1005
Abstract
A combined N–body/hydrodynamical code is presented. Hydrodynamical properties are determined using smoothed particle hydrodynamics (SPH). The gravitational interaction of gas and collisionless particles is treated in a direct summation approach which benefits from the high speed of the special-purpose hardware GRAPE (GRAvity PipE). Besides gravitational forces, GRAPE also returns the list of neighbours, and can therefore be used to speed up the hydrodynamical part also. After the interaction list has been passed, density, pressure forces, propagation and interpolation of particles, etc., are calculated on the frontend, a 50-MHz SUN SPARC 10. In order to combine SPH and GRAPE, possible limitations arising from the hardware design of GRAPE are carefully analysed and modifications compared with current SPH codes are discussed.Keywords
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