An optimised chemical kinetic model for the combustion of fuel mixtures of syngas and natural gas

FUEL

卷:262

Article

Methling, T.¹  Braun-Unkhoff, M.¹  Riedel, U.¹ 

[1] German Aerosp Ctr DLR, Inst Combust Technol, D-70569 Stuttgart, Germany

关键词: Chemical kinetic model;    Syngas;    Natural gas;    Biogenic fuel;    Optimisation;   

DOI  :  10.1016/j.fuel.2019.116611

来源: Elsevier

【 摘 要 】

A chemical kinetic model for the combustion of fuel mixtures - mainly of hydrogen, carbon monoxide and methane - was derived from a comprehensive optimisation based on experimental data. The experimental data include ignition delay times from shock tubes, species profiles from shock tubes, jet stirred reactors, flow reactors and burner stabilised flames as well as several laminar flame speeds. For this large scale optimisation of 475 model parameters within their uncertainty boundaries the novel linear transformation model was successfully applied. The derived optimised chemical kinetic model reproduces the experimental data significantly more accurately than established conventional models that are also investigated in this study. In this regard, especially the reproducibility of the experiments for the combustion of fuel mixtures containing both syngas and methane is significantly increased. The chemical kinetic model is valid for a wide range of boundary conditions and is suitable for the numerical design and adaptation of various combustion machinery running on the investigated fuel mixtures or biogenic gases, respectively.

【 授权许可】

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