Collaborative Research:Subgrid-Scale Mixing Models for Large Eddy Simulation of Turbulent Flames

合作研究：湍流火焰大涡模拟的亚网格尺度混合模型

• 批准号: 0651174
• 负责人: Chenning Tong
• 金额: $ 22.3万
• 依托单位: Clemson University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0651174&HistoricalAwards=false
• 关键词: Collaborative; Research; Subgrid; Scale; Mixing

Proposal Number: CBET-0651174 / CBET-0651788Principal Investigator: Tong, Chenning / Frankel, Steven H.Affiliation: Clemson University / Purdue UniversityProposal Title: Collaborative Research: Subgrid-Scale Mixing Models for Large Eddy Simulation of Turbulent Flames Public Abstract (CBET-0651174 / CBET-0651788)Collaborative Research: Subgrid-Scale Mixing Models for Large Eddy Simulation of Turbulent FlamesModeling and simulation of turbulent combustion is important for increasing efficiency and decreasing pollutant emissions, yet this field is challenged by requiring extremely large amounts of computational resources. The goal of this research is to understand turbulent scalar subgrid scale mixing and develop advanced Large-Eddy Simulation (LES) mixing models. This research presents a collaboration between an experimentalist (Tong of Clemson) and a modeler (Frankel of Purdue) to investigate modeling of the subgrid-scale scalar joint filtered density function (FDF) and its statistics, as well as of other related aspects of probability-density-function modeling. The investigators propose an experimental / computational investigation of a novel three-stream jet mixing problem, an idealized nonpremixed jet flame, and various turbulent partially-premixed jet flames (Sandia TNF D, E, and F flames) as reference flames. The project is focused on the improvement of scalar FDF methods used in conjunction with LES. LES/FDF calculations will be performed by adopting three scalar mixing models and the variable mixing time scale model of Cha for reacting scalars. Simultaneously, measurements will be used to assess the validity of these mixing models and to evaluate results of LES/FDF calculations. Data from experiments conducted at Wright-Patterson Air Force Base and Sandia National Laboratories will also be used to develop improved mixing models.Technologically and scientifically, the success of this project can have a significant impact on combustion-turbulence modeling. In addition, the two graduate students supported under this proposal will benefit from the cross-university interaction and from interactions with scientists and engineers at the Air Force Research Laboratory at Wright-Patterson AFB, Sandia National Labs in Livermore CA, and the Turbulent Non-premixed Flame (TNF) Workshop.

建议编号：CBET-0651174 / CBET-0651788 PRINCIPAL研究者：TONG，CHENNING / FRANKEL，Steven H。研究：用于大型涡流模拟火焰模型和湍流燃烧模拟的大型涡流模拟模型对于提高效率和降低污染物排放至关重要，但是该领域通过需要大量的计算资源而构成挑战。 这项研究的目的是了解湍流的标量亚网格尺度混合并开发高级大涡模拟（LES）混合模型。 这项研究提出了实验主义者（克莱姆森的汤）与建模者（普渡大学的弗兰克尔）之间的合作，以研究亚网格级标量关节过滤密度函数（FDF）及其统计数据以及概率密度 - 功能 - 功能 - 功能 - 功能建模的其他相关方面。研究人员提出了一种新型三潮射流混合问题的实验 /计算研究，理想化的非固定喷气火焰以及各种湍流部分爆炸的喷气火焰（Sandia TNF D，E和F火焰）作为参考火焰。该项目的重点是改进与LES结合使用的标量FDF方法。 LES/FDF计算将通过采用三个标量混合模型和CHA的可变混合时间尺度模型来进行反应标量。同时，测量值将用于评估这些混合模型的有效性并评估LES/FDF计算的结果。在赖特 - 帕特森空军基础和桑迪亚国家实验室进行的实验的数据也将用于开发改进的混合模型。从科学和科学上讲，该项目的成功可以对燃烧驱动型建模产生重大影响。此外，根据该提案支持的两名研究生将受益于跨大学的互动，以及与Wright-Patterson AFB空军研究实验室的科学家和工程师的互动，Livermore CA的Sandia National Labs以及CA的Sandia National Labs以及湍流的非原始火焰（TNF）车间。