arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.2959astro-ph.HE
收藏

从对流到爆炸:Ia型超新星的端到端模拟

From Convection to Explosion: End-to-End Simulation of Type Ia Supernovae

A. Nonaka, A. S. Almgren, J. B. Bell, H. Ma, S. E. Woosley, M. Zingale

摘要:

我们提出了我们的端到端的计算能力,通过Ia型超新星的爆炸阶段的对流阶段。我们计算的对流阶段的点火时间使用我们的低马赫数代码,MAESTRO,和随后的爆炸阶段使用我们的可压缩代码,CASTRO。这两个代码共享相同的BoxLib软件框架,并使用有限体积,块结构自适应网格细化(AMR),以实现高分辨率,三维全明星模拟,可扩展到100,000+核心。我们目前的初步结果,从第一次模拟的对流点火前使用MAESTRO AMR。我们还证明了我们的能力,在CASTRO使用直接从MAESTRO点火前获得的数据初始化的爆炸阶段的可压缩模拟。在解释热点的大小和分布时,在此初始化过程中必须小心。

英文摘要:

We present our end-to-end capability for computing the convective phase through the explosion phase of Type Ia supernovae. We compute the convective phase up to the time of ignition using our low Mach number code, MAESTRO, and the subsequent explosion phase using our compressible code, CASTRO. Both codes share the same BoxLib software framework and use finite-volume, block-structured adaptive mesh refinement (AMR) to enable high-resolution, three-dimensional full-star simulations that scale to 100,000+ cores. We present preliminary results from the first-ever simulations of convection preceding ignition using MAESTRO with AMR. We also demonstrate our ability to initialize a compressible simulation of the explosion phase in CASTRO using data obtained directly from MAESTRO just before ignition. Some care must be taken during this initialization procedure when interpreting the size and distribution of hot spots.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑