LES and hybrid RANS/LES of swirling flows with compression by using differential subgrid stress models

使用微分亚网格应力模型进行压缩旋流的 LES 和混合 RANS/LES

• 批准号: 5405888
• 负责人: Professor Dr.-Ing. Suad Jakirlic
• 金额: --
• 依托单位: Fachgebiet Strömungslehre und Aerodynamik
• 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 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5405888?language=en
• 关键词: LES; hybrid; RANS; swirling; flows

The proposed work aims at development of the subgrid stress model governed by the corresponding transport equation. Both the conventional LES as well as a novel hybrid RANS/LES procedure will be investigated. Particular attention will be devoted to the interface matching in the former case. The flow configurations under investigation are pertinent to combustor geometries, exhibiting wall-bounded and free separation regions. Furthermore, swirling flows subjected to compression caused by moving walls approaching each other will be considered. DNS data will be provided in this case, in order to calibrate the hybrid LES/RANS subgrid model.

所提出的工作的目的是在发展的亚网格应力模型由相应的输运方程。传统的LES以及一种新的混合RANS/LES程序将进行调查。特别注意将致力于在前一种情况下的接口匹配。所研究的流动构型与燃烧室几何形状有关，表现出有壁面和自由分离区。此外，旋流受到压缩所造成的移动壁接近对方将被考虑。在这种情况下，将提供DNS数据，以校准混合LES/RANS子网格模型。