TY - GEN
T1 - Modeling of gasoline compression ignition engine in partially premixed combustion mode
AU - An, Yanzhao
AU - Tang, Qinglong
AU - Vallinayagam, Raman
AU - Shi, Hao
AU - Sim, Jaeheon
AU - Chang, Junseok
AU - Magnotti, Gaetano
AU - Im, Hong G.
AU - Johansson, Bengt
N1 - KAUST Repository Item: Exported on 2020-11-13
Acknowledgements: This work was funded by competitive research funding from King Abdullah University of Science and Technology (KAUST), and by Saudi Aramco under the FUELCOM-II program. The authors would like to thank Convergent Science for providing licenses for the CONVERGE software.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - This study aims to model partially premixed combustion (PPC) with flame index concept for low-octane gasoline in compression ignition (CI) engine. The validation experiment was carried out in a full-transparent AVL single optical CI engine. Fuel injection timing was fixed at -30 CAD aTDC to achieve PPC operation condition. Primary reference fuel, PRF77, with octane number of 77, was selected as test low-octane gasoline surrogate fuel. Multiple optical diagnostics were performed to validate numerical simulations, including high-speed color imaging and spray-tracer planar laser-induced fluorescence (PLIF) imaging. Full cycle engine simulations were performed using a CFD code CONVERGETM. The Takeno flame index was used to analyze the evolution of premixed and non-premixed flames. The simulation results show that the flame index could be used as a useful indicator for evaluating and quantifying combustion development under PPC operating condition. Premixed flames distribution is more consistent with the relatively low-temperature contour of 1500 K, most of the fuel/air mixture is burned out and less premixed flames exits at higher temperature contour of 2300 K.
AB - This study aims to model partially premixed combustion (PPC) with flame index concept for low-octane gasoline in compression ignition (CI) engine. The validation experiment was carried out in a full-transparent AVL single optical CI engine. Fuel injection timing was fixed at -30 CAD aTDC to achieve PPC operation condition. Primary reference fuel, PRF77, with octane number of 77, was selected as test low-octane gasoline surrogate fuel. Multiple optical diagnostics were performed to validate numerical simulations, including high-speed color imaging and spray-tracer planar laser-induced fluorescence (PLIF) imaging. Full cycle engine simulations were performed using a CFD code CONVERGETM. The Takeno flame index was used to analyze the evolution of premixed and non-premixed flames. The simulation results show that the flame index could be used as a useful indicator for evaluating and quantifying combustion development under PPC operating condition. Premixed flames distribution is more consistent with the relatively low-temperature contour of 1500 K, most of the fuel/air mixture is burned out and less premixed flames exits at higher temperature contour of 2300 K.
UR - http://hdl.handle.net/10754/665933
UR - http://www.combustionsociety.jp/aspacc19/program_final0711.html#CH0238
UR - http://www.scopus.com/inward/record.url?scp=85083951576&partnerID=8YFLogxK
M3 - Conference contribution
BT - 12th Asia-Pacific Conference on Combustion, ASPACC 2019
PB - Combustion Institute
ER -