Parallel Algorithms for General Geometry Navier-Stokes Calculations

FISHER 9405403高级计算流体力学软件将用于分布式存储多计算机，以提供复杂区域中湍流的大涡模拟DG1DG2所需的分辨率(106107个网格点)和高精度。选择分布式存储并行体系结构的动机是高性能和经济性，这源于它们固有的利用数据局部性的能力。这项工作将基于不可压缩的Navier-Stokes方程的谱元素方法，重点是改进椭圆求解器的性能和增加几何灵活性。通过实施三维非协调谱元素离散化，将实现增强的几何和分辨率灵活性。该软件将有多种应用。拟议活动的范围和复杂性将促进大规模并行计算的进一步研究。{Page\#“‘Page：’#‘’”|Page：1}DG1{Page\#“‘Page：’#‘’”|Page：1}DG2

Fisher 9405403 Advanced computational fluid dynamics (CFD) software for distributed memory multicomputers will be developed to provide the resolution capabilities (106-107 gridpoints) and high-order accuracy required for large eddy simulation (LES) DG1 DG2 of turbulent flows in complex domain. The choice of distributed memory parallel architectures is motivated by high performance and economy which derives from their intrinsic ability to exploit data locality. This work will be based on the spectral element method for the incompressible Navier-Stokes equations, with emphasis on improving elliptic solver performance and increasing geometric flexibility. Enhanced geometric and resolution flexibility will be achieved through implementation of three-dimensional nonconforming spectral element discretizations. The software will have a variety of applications. The scope and complexity of the proposed activities will foster further research in large scale parallel computation. {PAGE \# "'Page: '#' '"|Page: 1 } DG1 {PAGE \# "'Page: '#' '"|Page: 1 } DG2