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Large-Eddy Simulation of Ethanol Spray Combustion Using a Finite-Rate Combustion Model

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Cleaner Combustion and Sustainable World (ISCC 2011)

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Abstract

Large-eddy simulation of spray combustion is under its rapid development, but the combustion models are less validated by detailed experimental data. In this paper, large-eddy simulation of ethanol-air spray combustion was made using an Eulerian-Lagrangian approach, a subgrid-scale kinetic energy stress model, and a finite-rate combustion model. The simulation results are validated in detail by experiments. The LES obtained statistically averaged temperature is in agreement with the experimental results in most regions. The instantaneous LES results show the coherent structures of the shear region near the high-temperature flame zone and the fuel vapor concentration map, indicating the droplets are concentrated in this shear region. The droplet sizes are found to be in the range of 20–100μm. The instantaneous temperature map shows the close interaction between the coherent structures and the combustion reaction.

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Acknowledgements

This study was sponsored by the Project of National Natural Science Foundation of China under the Grant 50736006, the Project supported by the State Key Laboratory of Engines, Tianjin University under the Grant K2010-07, and the Project supported by the Research Grant Council of Hong Kong under the Grants Poly-U 5105/08E and B-Q10H.

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Authors and Affiliations

  1. Department of Engineering Mechanics, Tsinghua University, Beijing, 100084, China

    K. Li & L. X. Zhou

  2. Department of Applied Mathematics, Hong Kong Polytecnic University, Hong Kong, China

    C. K. Chan

Authors
  1. K. Li
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  2. L. X. Zhou
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  3. C. K. Chan
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Corresponding author

Correspondence to L. X. Zhou .

Editor information

Editors and Affiliations

  1. Institute of Thermal Engineering, Tsinghua University, Beijing, China, People's Republic

    Haiying Qi

  2. Institute of Thermal Engineering, Tsinghua University, Beijing, China, People's Republic

    Bo Zhao

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© 2013 Springer-Verlag Berlin Heidelberg & Tsinghua University Press

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Li, K., Zhou, L.X., Chan, C.K. (2013). Large-Eddy Simulation of Ethanol Spray Combustion Using a Finite-Rate Combustion Model. In: Qi, H., Zhao, B. (eds) Cleaner Combustion and Sustainable World. ISCC 2011. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30445-3_17

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  • DOI: https://doi.org/10.1007/978-3-642-30445-3_17

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-30444-6

  • Online ISBN: 978-3-642-30445-3

  • eBook Packages: EnergyEnergy (R0)

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