Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An Eulerian PPM & PIC Code for Cosmological Hydrodynamics   We 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.

29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
9
The categories of this paper are: nlin
16
The categories of this paper are: stat
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
5
The categories of this paper are: gr-qc
31
The categories of this paper are: ao-sci