Large Eddy Simulations of Separated Flows on Massively Parallel Architectures (Postdoctoral Research Associateship in Computational Science and Engineering)

[404934] Tafti本提案计划构建一个可扩展的计算流体动力学计算机程序，用于大规模并行处理平台。并行算法将以结构化的模块化方式设计，重点是易于移植到各种MPP机器上。这将允许计算机程序用于评估各种MPP平台在解决大规模流体流动计算。模块化和通用的代码结构将允许人们攻击各种各样的流体动力学问题，以及适应补充方程。它将侧重于理解和预测中到高雷诺数范围内的分离流动。将开发基于page或紧凑差分格式的精确预测技术，并用于评估简单但基本的分离流配置中的亚网格尺度湍流模型。嵌入式二维和三维结构的提取是提出的研究的主要部分。

9404934 Tafti This proposal plans to construct a scalable computational fluid dynamics computer program for use on massively parallel processing platforms. The parallel algorithm will be designed in a structured modular manner with emphasis on easy portability to various MPP machines. This will allow the computer program to be used to evaluate various MPP platforms in solving large-scale fluid flow computations. The modular and general code structure will allow one to attack a wide variety of fluid dynamics problems as well as accommodate supplementary equations. It will focus on understanding and predicting separated flows in the moderate to high Reynolds number range. Accurate prediction techniques based on Pade or compact difference schemes will be developed and used to evaluate subgrid-scale turbulence models in a simple yet fundamental separated flow configuration. The extraction of embedded two and three-dimensional structures represents a major part of proposed research.