数值相对论流体力学中的状态方程
天体物理学
2009-11-11 v1
摘要
相对论气体温度的提高引出了相对论流体力学中的状态方程 (EoS) 的问题。我们研究了数值相对论流体力学的 EoS，提出了一种新型 EoS，该 EoS 简单易用，却能非常接近地近似数值相对论流体力学中单组分理想气体的 EoS。我们还讨论了从保守变量计算原始变量的方法，并在一般 EoS 下呈现了相对论流体力学的本征结构，以便用于构建数值代码。 presented for a general EoS, in a way that they can be used to build numerical codes. Tests with a code based on the Total Variation Diminishing (TVD) scheme are presented to highlight the differences induced by different EoS's. The tests demonstrate the practical utility and accuracy of the proposed EoS in numerical simulations of relativistic hydrodynamics.
引用
@article{arxiv.astro-ph/0605550,
title = {Equation of State in Numerical Relativistic Hydrodynamics},
author = {Dongsu Ryu and Indranil Chattopadhyay and Eunwoo Choi},
journal= {arXiv preprint arXiv:astro-ph/0605550},
year = {2009}
}
备注
To appear in the ApJS September 2006, v166n1 issue. Pdf with full resolution figures can be downloaded from http://canopus.cnu.ac.kr/ryu/ryuetal.pdf