Development of scalar dissipation rate based reaction rate models for the large eddy simulations of premixed flames

开发基于标量耗散率的反应速率模型，用于预混火焰的大涡流模拟

• 批准号: EP/I027556/1
• 负责人: Nedunchezhian Swaminathan
• 金额: $ 19.91万
• 依托单位: University of Cambridge
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FI027556%2F1
• 关键词: Development; scalar; dissipation; rate; based

This project aims to develop an efficient Scalar Dissipation Rate (SDR) based reaction rate closure for the Large Eddy Simulation (LES) of turbulent premixed flames. Although SDR based closures are well established for Reynolds Averaged Navier Stokes (RANS) simulations of non-premixed flames, they are rare for RANS and LES of turbulent premixed flames, and no detailed evaluation of their performance in LES is available so far. In this project, the SDR based reaction rate closures will be developed and simultaneously assessed by a-priori analyses of explicitly filtered Direct Numerical Simulation (DNS) data, and a-posteriori evaluations of model performances in LES calculations, in a configuration for which experimental data is available. Based on the simultaneous a-priori and a-posteriori analyses, new models will be developed and their performance will subsequently be assessed. The best models will then be implemented in a LES code for turbulent premixed flame modelling. An efficient SDR-based reaction rate closure will provide a robust CFD based design tool for reliable, cleaner and cost-effective combustion devices operating in lean premixed mode (e.g. Spark Ignition engines, Lean Premixed Pre-vaporised (LPP) industrial gas turbine combustors).

本项目旨在开发一种有效的基于标量耗散率（SDR）的反应速率闭合方法，用于湍流预混火焰的大涡模拟（LES）。虽然基于SDR的闭包已经在非预混火焰的Reynolds average Navier Stokes （RANS）模拟中得到了很好的建立，但它们在紊流预混火焰的RANS和LES模拟中还很少见，而且目前还没有对它们在LES中的性能进行详细的评估。在本项目中，将开发基于SDR的反应速率闭包，并同时通过对明确过滤的直接数值模拟（DNS）数据的先验分析和对LES计算中模型性能的后验评估进行评估，并提供实验数据。在同时进行先验和后验分析的基础上，将开发新的模型并随后对其性能进行评估。最佳模型将在湍流预混火焰建模的LES代码中实现。高效的基于sdr的反应速率关闭将为在精益预混模式下运行的可靠、更清洁、更具成本效益的燃烧装置（例如火花点火发动机、精益预混预汽化（LPP）工业燃气轮机燃烧器）提供强大的CFD设计工具。

项目成果

Large Eddy Simulation of flame edge evolution in a spark-ignited methane-air jet

• DOI: 10.1016/j.proci.2016.06.023
• 发表时间: 2017
• 作者: Zhi X. Chen;Shaohong Ruan;N. Swaminathan

A priori investigation of subgrid correlation of mixture fraction and progress variable in partially premixed flames

部分预混火焰中混合分数与进度变量亚网格相关性的先验研究

• DOI: 10.1080/13647830.2018.1459862
• 发表时间: 2018
• 期刊: Combustion Theory and Modelling
• 影响因子: 1.3
• 作者: Chen Z

Simulation of MILD combustion using Perfectly Stirred Reactor model

• DOI: 10.1016/j.proci.2016.06.007
• 发表时间: 2017-01-01
• 期刊: PROCEEDINGS OF THE COMBUSTION INSTITUTE
• 影响因子: 3.4
• 作者: Chen, Z.;Reddy, V. M.;Swaminathan, N.
• 通讯作者: Swaminathan, N.

Prediction of local extinctions in piloted jet flames with inhomogeneous inlets using unstrained flamelets

使用无应变小火焰预测具有不均匀入口的先导喷射火焰中的局部熄灭

• DOI: 10.1016/j.combustflame.2019.11.007
• 发表时间: 2020
• 期刊: Combustion and Flame
• 影响因子: 4.4
• 作者: Chen Z

Multiscale analysis of turbulence-flame interaction in premixed flames

• DOI: 10.1016/j.proci.2016.07.111
• 发表时间: 2017-01-01
• 期刊: PROCEEDINGS OF THE COMBUSTION INSTITUTE
• 影响因子: 3.4
• 作者: Doan, N. A. K.;Swaminathan, N.;Chakraborty, N.
• 通讯作者: Chakraborty, N.