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

该项目的工作程序包括三个软件包，其中两个解决问题的保守网格重建的完全保守的拉格朗日格式开发来模拟有限振幅恒星脉动。在一个工作包中，保守的重新分区和重新映射程序将在球面几何中发展，并随后应用于剧烈不稳定的恒星模型。对网格重建的3D分析的程序的扩展是另一个工作包的主题。支持运营商和有限元方法之间的连接进行了研究，在进一步的工作包，以使现有的基础设施的有限元方法提供给支持运营商的方法。

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.