Hyperbolic relaxation method for elliptic equations

Hyperbolic relaxation method for elliptic equations
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椭圆方程的双曲松弛法

DOI:
10.1103/physrevd.98.084044
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发表时间:
2017
期刊:
影响因子:
5
通讯作者:
Portugal
Portugal
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
H. Ruter;D. Hilditch;Marcus Bugner;Bernd Brugmann Theoretical Physics Institute;U. Jena;Jena;H Germany;Centra;U. Lisbon;Lisboa;Portugal

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我们展示了如何修改抛物型Jacobi松弛的基本思想以获得一类适合求解椭圆方程的新的双曲松弛格式。一些双曲型松弛的分析和数值性质进行检查。我们描述了它的实施作为一个一阶系统中的伪谱演化代码,证明了某些椭圆方程可以在双曲演化系统的框架内求解。应用包括数值广义相对论中的各种初始数据问题。特别是,我们生成的初始数据的演化的无质量标量场,一个单一的中子星星,和二进制中子星星系统。
We show how the basic idea of parabolic Jacobi relaxation can be modified to obtain a new class of hyperbolic relaxation schemes that are suitable for the solution of elliptic equations. Some of the analytic and numerical properties of hyperbolic relaxation are examined. We describe its implementation as a first order system in a pseudospectral evolution code, demonstrating that certain elliptic equations can be solved within a framework for hyperbolic evolution systems. Applications include various initial data problems in numerical general relativity. In particular we generate initial data for the evolution of a massless scalar field, a single neutron star, and binary neutron star systems.
偏心率可调的双中子星的初始数据
DOI: 10.1103/physrevd.90.084043
发表时间: 2014
期刊: Physical Review D
影响因子: 5
作者:
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DOI: 10.1103/physrevd.92.124007
发表时间: 2015
期刊: Physical Review D
影响因子: 5
作者:
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通讯作者: W. Tichy
DOI: 10.1103/physrevd.77.024027
发表时间: 2006-10
期刊: Physical Review D
影响因子: 5
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