论文标题
TION：风吹星云的模拟
PION: Simulations of Wind-Blown Nebulae
论文作者
论文摘要
我们介绍了Pion的概述，这是一个开源软件项目，用于在嵌套网格上求解辐射 - 磁性水力动力学方程，旨在对围绕巨大恒星进行非对称星云进行建模。简要介绍了混合OpenMP/MPI并行算法的新实现，与当前版本相比，改进了缩放率。然后对狼射线恒星周围扩展的星云进行了三维模拟，然后进行分析，类似于文献中的先前2D模拟。气体和X射线表面亮度的发射度量的演变是根据时间的函数计算的，并进行了一些定性比较。
We present an overview of PION, an open-source software project for solving radiation-magnetohydrodynamics equations on a nested grid, aimed at modelling asymmetric nebulae around massive stars. A new implementation of hybrid OpenMP/MPI parallel algorithms is briefly introduced, and improved scaling is demonstrated compared with the current release version. Three-dimensional simulations of an expanding nebula around a Wolf-Rayet star are then presented and analysed, similar to previous 2D simulations in the literature. The evolution of the emission measure of the gas and the X-ray surface brightness are calculated as a function of time, and some qualitative comparison with observations is made.
