Citation: PANG Bin, XIE Mao-Zhao, JIA Ming, LIU Yao-Dong. Improved Phenomenological Soot Model for Multicomponent Fuel Based on Variations in PAH Characteristics with Fuel Type[J]. Acta Physico-Chimica Sinica, ;2013, 29(12): 2523-2533. doi: 10.3866/PKU.WHXB201310161 shu

Improved Phenomenological Soot Model for Multicomponent Fuel Based on Variations in PAH Characteristics with Fuel Type

1.
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering, Dalian University of Technology, Dalian 116023, Liaoning Province, P. R. China

Received Date: 11 July 2013
Available Online: 16 October 2013
Fund Project: 国家自然科学基金(51176020, 51176021) (51176020, 51176021)美国通用汽车全球研发中心(GM024705-NV584)资助项目 (GM024705-NV584)

Integration of a skeletal polycyclic aromatic hydrocarbon (PAH) model with a toluene reference fuel (TRF) oxidation model was used to develop a skeletal TRF-PAH model. A phenomenological soot model, coupled with the new TRF-PAH model, was modified based on the experimental observation that fuels with different molecular structures produce PAHs and soot in different ways. The new TRF-PAH model was validated against experimental data for the relevant PAHs for the oxidation/pyrolysis of toluene in a jet-stirred reactor, flow reactor, and shock tube. The results show that the PAH model can reproduce the experimental data for the major species concentrations. The predicted benzene concentration in the oxidation of alkanes and aromatic hydrocarbons indicates that the molecular structure of the fuel significantly affects the PAH formation pathway. The improved soot model was validated against measured soot yields from the pyrolysis of toluene, toluene/n-heptane mixtures, and toluene/isooctane mixtures in a shock tube, as well as toluene oxidation. The results show that the predicted soot yields obtained using the new soot model are in reasonable agreement with the experimental data over a wide operating range. Finally, the soot model was used to predict the soot emissions from a diesel engine fueled with TRF20. The results indicate that the TRF-PAH combustion model and the new soot model can reproduce the combustion and emission characteristics well.
- Toluene reference fuel,
- Polycyclic aromatic hydrocarbon,
- Phenomenological soot model,
- Chemical kinetic model,
- Direct-injection diesel engine
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沈阳化工大学材料科学与工程学院沈阳 110142

Improved Phenomenological Soot Model for Multicomponent Fuel Based on Variations in PAH Characteristics with Fuel Type

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通讯作者: 陈斌, bchen63@163.com