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Hybrid Eulerian-Lagrangian method for soot modelling applied to ethylene-air premixed flames

Author

Listed:
  • Dellinger, Nicolas
  • Bertier, Nicolas
  • Dupoirieux, Francis
  • Legros, Guillaume

Abstract

Soot formation has become an important issue in the design of gas turbine combustors due to its environmental impact and its contribution to radiative heat transfer in the combustion chamber. However, efficient and accurate prediction of soot particles formation, growth, oxidation and interaction in gas turbine combustors is still an open field in computational fluid dynamics. The present approach proposes to combine a reduced gas-phase chemistry, a sectional model for polycyclic aromatic hydrocarbons, and a Lagrangian description of soot particles dynamics. The Lagrangian description has been chosen for its ability to simulate the evolution of the particle size distribution. A numerical procedure is proposed to minimise its CPU cost. This approach was successfully applied to the simulation of steady laminar premixed ethylene-air flames at three fuel equivalence ratios, which constitutes a prerequisite towards its use in an aeronautical combustion chamber.

Suggested Citation

  • Dellinger, Nicolas & Bertier, Nicolas & Dupoirieux, Francis & Legros, Guillaume, 2020. "Hybrid Eulerian-Lagrangian method for soot modelling applied to ethylene-air premixed flames," Energy, Elsevier, vol. 194(C).
    • Handle: RePEc:eee:energy:v:194:y:2020:i:c:s0360544219325538
    DOI: 10.1016/j.energy.2019.116858
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