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arXiv 2608.06466astro-ph.IM

AMReX天体物理微物理库:基于AMReX库的天体物理模拟代码微物理例程集

AMReX-Astrophysics Microphysics: A set of microphysics routines for astrophysical simulation codes based on the AMReX library

Astro Microphysics Team, Khanak Bhargava, Abigail Bishop, Zhi Chen, Doreen Fan, Carl Fields, Adam M. Jacobs, Eric T. Johnson, Max P. Katz, Mark Krumholz, Chris … 展开作者

Astro Microphysics Team, Khanak Bhargava, Abigail Bishop, Zhi Chen, Doreen Fan, Carl Fields, Adam M. Jacobs, Eric T. Johnson, Max P. Katz, Mark Krumholz, Chris Malone, Andy Nonaka, Piyush Sharda, Alexander Smith Clark, Frank Timmes, Ben Wibking, Don E. Willcox, Michael Zingale

AI总结:

该研究开发了基于AMReX库的天体物理微物理库,为多款天体物理模拟代码提供微物理例程与求解器,采用C++实现且以GPU卸载为核心设计特征。

AI中文摘要:

AMReX天体物理微物理库为基于AMReX自适应网格细化库(W. Zhang等人,2019)构建的天体物理模拟代码提供了一套通用的微物理例程(反应网络及相关物理、状态方程、各类输运系数),以及求解器(刚性常微分方程积分器、非线性系统求解器)。多个多维模拟代码,包括可压缩流体动力学代码Castro(Almgren等人,2010)、低马赫数流体动力学代码MAESTROeX(Fan等人,2019)、辐射流体动力学代码Quokka(Wibking & Krumholz,2022),均使用该微物理库为其演化的流体动力学系统提供闭合所需的物理与求解器。该库采用C++实现,GPU卸载是其核心设计特征。

英文摘要:

The AMReX-Astrophysics Microphysics library provides a common set of microphysics routines (reaction networks and associated physics, equations of state, and various transport coefficients) as well as solvers (stiff ODE integrators, nonlinear system solvers) for astrophysical simulation codes built around the AMReX adaptive mesh refinement library (W. Zhang et al., 2019). Several multi-dimensional simulation codes, including the compressible hydrodynamics code Castro (Almgren et al., 2010), the low-Mach number hydrodynamics code MAESTROeX (Fan et al., 2019), and the radiation-hydrodynamics code Quokka (Wibking & Krumholz, 2022) use Microphysics to provide the physics and solvers needed to close the hydrodynamics systems that they evolve. The library is implemented in C++ with GPU-offloading a key design feature.

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