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

该项目的工作程序由三个程序包组成，其中两个程序包解决了为模拟有限振幅恒星脉动而开发的完全守恒的拉格朗日格式的守恒网格重建问题。在工作包中，保守的重新分区和重新映射程序将在球面几何中开发，随后将应用于极不稳定的恒星模型。将该程序扩展到对网格重建进行三维分析是另一个工作包的主题。支持算子和有限元方法之间的联系在进一步的工作包中被研究，以便使现有的有限元方法的基础设施可用于支持算子方法。

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.