.png){kind=icon}
返回
Error-controlled kinetics reduction based on non-linear optimization and sensitivity analysis
.png){kind=icon}
PRE
AI
DOI：10.1016/j.combustflame.2018.11.007.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Efficient reduction techniques are necessary for the construction of compact chemical kinetic mechanisms to enable the application to large-scale simulations. In this work, a new formulation is proposed to derive skeletal mechanisms by species elimination. The proposed method relies on a gradient-based non-linear optimization (NLO) method, allowing for direct error control on user-defined quantities of interest (Qols). The key idea consists in formulating the species elimination by relaxing an integer-optimization problem into a continuous optimization problem that is solved iteratively. A species-targeted sensitivity analysis (SA) formulation is presented that can be combined with the optimization method to reduce the overall computational complexity of the procedure. After illustrating its principle, the NLO procedure is applied to different fuels of increasing chemical complexity, including methane, n-dodecane, and a four-component kerosene surrogate. Direct comparisons are performed with the directed relation graph method with error propagation (DRGEP) and SA. For the reduction of a detailed methane mechanism, consistency with DRGEP and SA is demonstrated, and the NLO procedure is shown to generate smaller mechanisms compared to the other two methods. In application to larger hydrocarbon and multicomponent transportation fuels, it is shown that significantly smaller mechanisms are obtained with the NLO procedure compared to the other approaches. (C) 2018 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
Keyword:
Reduced kinetics
Combustion
Optimization
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
6.2
论文数:
9.7K
被引数:
4.2W
机构
引用论文
Linear time reduction of large kinetic mechanisms with directed relation graph:: n-Heptane and iso-octane具有定向关系图的大型动力学机制的线性时间减少:: 正庚烷和异辛烷.png)
COMBUSTION AND FLAME
COMBUSTION AND FLAMEIF6.2
PREAI
分享收藏A path flux analysis method for the reduction of detailed chemical kinetic mechanisms减少详细化学动力学机制的路径通量分析方法COMBUSTION AND FLAME
COMBUSTION AND FLAMEIF6.2
PREAI
分享收藏分享收藏The experimental evaluation of a methodology for surrogate fuel formulation to emulate gas phase combustion kinetic phenomenaCOMBUSTION AND FLAME
COMBUSTION AND FLAMEIF6.2
PREAI
分享收藏
The ignition, oxidation, and combustion of kerosene: A review of experimental and kinetic modeling
PREAI
分享收藏
查看更多内容