Pseudo-Spectral Methods for LES of Complex Flows

复杂流 LES 的伪谱方法

• 批准号: 5405907
• 负责人: Professor Dr. Michael Schäfer
• 金额: --
• 依托单位: Fachgebiet Numerische Berechnungsverfahren im Maschinenbau
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2003
• 资助国家: 德国
• 起止时间: 2002-12-31 至 2010-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5405907?language=en
• 关键词: Pseudo; Spectral; Methods; LES; Complex

The purpose of the present project is the development, analysis, and application of a flexible pseudo-spectral method allowing LES with high accuracy and efficiency for complex practical turbulent flow problems. The project work will include the joint implementation of a corresponding pseudo-spectral code involving adequate dynamic subgrid models and advanced numerical techniques for the discretization and solution of the governing model equations. Special emphasis will be given to validation and verification aspects as well as a quality assurance with respect to numerical accuracy and efficiency. This will include investigations of basic question regarding the interaction of LES subgrid scale models with spectral discretizations. For comparisons results from other projects within the Research Group as well as results of direct numerical simulations for basic cases of complex flows inside generic geometries will be considered.

本项目的目的是一种灵活的伪谱方法的开发，分析和应用，允许具有高准确性和效率的LE，以实现复杂的实用湍流问题。项目工作将包括相应的伪谱代码的联合实施，该代码涉及适当的动态亚网格模型和高级数值技术，用于离散和解决方案的管理模型方程。将特别重点放在验证和验证方面以及关于数值准确性和效率方面的质量保证。这将包括对LES亚网格量表模型与光谱离散化的相互作用的基本问题的研究。为了进行比较，将考虑研究小组中其他项目的结果以及对通用几何形状内部复杂流的基本流量基本案例的直接数值模拟结果。