Direct Numerical Simulation of Shear Flow Phenomena on Parallel Vector Computers
Direct Numerical Simulation of Shear Flow Phenomena on Parallel Vector Computers
复制标题
并行矢量计算机上剪切流现象的直接数值模拟
DOI：
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发表时间：
2006
期刊：
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通讯作者：
U. Rist
中科院分区：
文献类型：
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作者：
A. Babucke;J. Linn;M. Kloker;U. Rist
本文提出了一种直接数值模拟求解三维完全可压缩Navier-Stokes方程的新程序。该格式基于六阶紧致差分和展向谱分析。一个混合MPI/共享内存并行实现，利用现代并行向量计算机提供的HLRS。区域分解和模块化边界条件允许应用到各种问题，同时保持良好的计算性能的高矢量化。为第一次计算选择的流动是一个混合层，它可以作为射流初始部分的模型流动。该项目的目的是更多地了解声音产生的机制。
A new code for direct numerical simulations solving the complete compressible 3-D Navier-Stokes equations is presented. The scheme is based on 6th-order compact finite differences and a spectral ansatz in spanwise direction. A hybrid MPI/shared-memory parallelization is implemented to utilize modern parallel vector computers as provided by HLRS. Domain decomposition and modular boundary conditions allow the application to various problems while keeping a high vectorization for favourable computing performance. The flow chosen for first computations is a mixing layer which may serve as a model flow for the initial part of a jet. The aim of the project is to learn more on the mechanisms of sound generation.