天文学进展Issue(2)：213-222,10.DOI:10.3969/j.issn.1000-8349.2013.02.06
波江座α的快速自转多方球模型
A Polytropic Model of Rapidly Rotating α Eri
摘要
Abstract
We present a three-dimensional numerical method for calculating the non-spherical shape and internal structure of a model of a rapidly rotating gaseous body with a polytropic index unity. The calculation is based on a finite element method and accounts for the full effects of rotation. We apply it to a model of a rapidly rotating, highly flattened star (α Eridani). The distributions of density and pressure are determined via a hybrid inverse approach by adjusting a priori unknown coefficient in the equation of state (EOS) until the model mass matches the observed mass of the star. The numerical method, implemented as a 3D finite element scheme, relies on massively parallel computing facilities. On the Dawning 5000A machine in Shanghai Supercomputer Center (SSC), we utilized typically 1024 cores to carry out our calculations effectively. The model and numerical method are both ready to be generalized to include various physical features and processes such as differential rotation, tidal effects and more realistic EOS of gaseous configurations.关键词
并行计算/有限元方法/多方球/快速自转恒星/波江座αKey words
parallel computing/finite element method/polytrope/rapidly rotating star/α Eri分类
天文与地球科学引用本文复制引用
孔大力,王涛,寇大治,刘敏..波江座α的快速自转多方球模型[J].天文学进展,2013,(2):213-222,10.基金项目
上海市科学技术委员会(1201H116400) （1201H116400）
