Nyx: A MASSIVELY PARALLEL AMR CODE FOR COMPUTATIONAL COSMOLOGY

被引：200
作者：
Almgren, Ann S. [1 ]
Bell, John B. [1 ]
Lijewski, Mike J. [1 ]
Lukic, Zarija [2 ]
Van Andel, Ethan [3 ]
机构：
[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Ctr Computat Sci & Engn, Berkeley, CA 94720 USA
[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Cosmol Ctr, Berkeley, CA 94720 USA
[3] Univ Calif Berkeley, Dept Math, Berkeley, CA 94720 USA
来源：
ASTROPHYSICAL JOURNAL | 2013年 / 765卷 / 01期
关键词：
gravitation; hydrodynamics; methods: numerical; ADAPTIVE MESH REFINEMENT; PIECEWISE PARABOLIC METHOD; IA SUPERNOVAE; HYDRODYNAMICS; SIMULATIONS; GAS; ALGORITHM; EVOLUTION; UNIVERSE; CASTRO;
D O I：
10.1088/0004-637X/765/1/39
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a new N-body and gas dynamics code, called Nyx, for large-scale cosmological simulations. Nyx follows the temporal evolution of a system of discrete dark matter particles gravitationally coupled to an inviscid ideal fluid in an expanding universe. The gas is advanced in an Eulerian framework with block-structured adaptive mesh refinement; a particle-mesh scheme using the same grid hierarchy is used to solve for self-gravity and advance the particles. Computational results demonstrating the validation of Nyx on standard cosmological test problems, and the scaling behavior of Nyx to 50,000 cores, are presented.
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页数：14
相关论文
共 48 条
  • [1] rpSPH: a novel smoothed particle hydrodynamics algorithm
    Abel, Tom
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 413 (01) : 271 - 285
  • [2] Low Mach number modeling of Type Ia supernovae. III. Reactions
    Almgren, A. S.
    Bell, J. B.
    Nonaka, A.
    Zingale, M.
    [J]. ASTROPHYSICAL JOURNAL, 2008, 684 (01) : 449 - 470
  • [3] Low Mach number modeling of Type Ia supernovae. II. Energy evolution
    Almgren, A. S.
    Bell, J. B.
    Rendleman, C. A.
    Zingale, M.
    [J]. ASTROPHYSICAL JOURNAL, 2006, 649 (02) : 927 - 938
  • [4] CASTRO: A NEW COMPRESSIBLE ASTROPHYSICAL SOLVER. I. HYDRODYNAMICS AND SELF-GRAVITY
    Almgren, A. S.
    Beckner, V. E.
    Bell, B.
    Day, M. S.
    Howell, L. H.
    Joggerst, C. C.
    Lijewski, M. J.
    Nonaka, A.
    Singer, M.
    Zingale, M.
    [J]. ASTROPHYSICAL JOURNAL, 2010, 715 (02) : 1221 - 1238
  • [5] A conservative adaptive projection method for the variable density incompressible Navier-Stokes equations
    Almgren, AS
    Bell, JB
    Colella, P
    Howell, LH
    Welcome, ML
    [J]. JOURNAL OF COMPUTATIONAL PHYSICS, 1998, 142 (01) : 1 - 46
  • [6] Low Mach number modeling of type Ia supernovae. I. Hydrodynamics
    Almgren, AS
    Bell, JB
    Rendleman, CA
    Zingale, M
    [J]. ASTROPHYSICAL JOURNAL, 2006, 637 (02) : 922 - 936
  • [7] [Anonymous], 2005, VISIT USERS MANUAL
  • [8] [Anonymous], 1980, The large-scale structure of the universe, DOI DOI 10.23943/PRINCETON/9780691209838.001.0001
  • [9] [Anonymous], ASTROPH9712217 INSPI
  • [10] 3-DIMENSIONAL ADAPTIVE MESH REFINEMENT FOR HYPERBOLIC CONSERVATION-LAWS
    BELL, J
    BERGER, M
    SALTZMAN, J
    WELCOME, M
    [J]. SIAM JOURNAL ON SCIENTIFIC COMPUTING, 1994, 15 (01) : 127 - 138
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