An Eulerian PPM & PIC Code for Cosmological Hydrodynamics

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dc.creatorSornborger, A.
dc.creatorFryxell, B.
dc.creatorOlson, K.
dc.creatorMacNeice, P.
dc.date1996-08-05
dc.date.accessioned2026-07-07T02:21:42Z
dc.date.available2026-07-07T02:21:42Z
dc.descriptionWe present a method for integrating the cosmological hydrodynamical equations including a collisionless dark matter component. For modelling the baryonic matter component, we use the Piecewise Parabolic Method (PPM) which is a high-accuracy shock capturing technique. The dark matter component is modeled using gravitationally interacting particles whose evolution is determined using standard particle-in-cell techniques. We discuss details of the inclusion of gravity and expansion in the PPM code and give results of a number of tests of the code. This code has been developed for a massively parallel, SIMD supercomputer: the MasPar MP-2 parallel processor. We present details of the techniques we have used to implement the code for this architecture and discuss performance of the code on the MP-2. The code processes $5.0 \times 10^4$ grid zones per second and requires 53 seconds of machine time for a single timestep in a $128^3$ simulation.
dc.description43 pages (including 18 figures), LaTeX type, mpeg simulations available at http://www.damtp.cam.ac.uk/user/ats25/, submitted Ap. J. Supp
dc.identifierhttps://arxiv.org/abs/astro-ph/9608019
dc.identifierhttp://arxiv.org/abs/astro-ph/9608019
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/10603
dc.subjectAstrophysics
dc.titleAn Eulerian PPM & PIC Code for Cosmological Hydrodynamics
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