High-precision numerical simulation of nonradial nonlinear stellar pulsations (A11)

非径向非线性恒星脉动的高精度数值模拟（A11）

• 批准号: 211184607
• 金额: --
• 依托单位: Institut für Numerische und Angewandte Mathematik (NAM)
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/211184607?language=en
• 关键词: precision; numerical; simulation; nonradial; nonlinear

The work program of this project consists of three packages, two of which address the problem of conservative grid reconstruction for the fully conservative Lagrangean schemes developed to simulate finite amplitude stellar pulsations. In a workpackage conservative rezoning and remapping procedure will be developed in spherical geometry and subsequently be applied to violently unstable stellar models. An extension of the procedure towards a 3D analysis of grid reconstruction is the subject of an other workpackage. The connection between support operator and finite element methods is investigated in a further workpackage in order to make the existing infrastructure of finite element methods available to the support operator approach.

该项目的工作计划包括三个包，其中两个包解决了为模拟有限振幅恒星脉动而开发的完全保守拉格朗日格式的保守网格重建问题。在一个工作包中，将在球面几何中开发保守的重新划分和重新映射程序，并随后应用于剧烈不稳定的恒星模型。对网格重建的三维分析程序的扩展是另一个工作包的主题。为了使现有的有限元方法的基础设施可用于支持操作方法，在进一步的工作包中研究了支持操作方法和有限元方法之间的联系。