One-dimensional combustion model with detailed chemistry for transient diesel sprays

A new quasi-dimensional multi-zone diesel combustion model was developed, using the Musculus–Kattke transient spray model. The later is modified and extended in order to take into account fuel evaporation, to deal with multiple species and to account for temperature changes due to mixing and combustion. The spray model is then coupled with the CHEMKIN code to calculate the chemical reaction rates and to evaluate the ignition delay and the combustion rate. The results are first compared with those from the original Musculus–Kattke model in the case of a non-vaporizing inert spray. Good agreement is found. Then, experiments from the Engine Combustion Network database are used to evaluate the code on diesel-like combustion realized in a combustion vessel. Several tests are first conducted to set the values of the various numerical parameters of the model. Then a detailed analysis of the results is provided for a test case. Finally, two parametric studies are performed, relative to the ambient temperature and the oxygen concentration. The agreement of the model with the experiments is qualitatively good. However, some quantitative discrepancies appear, especially at low temperatures or for diluted combustions.

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  • English

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  • Accession Number: 01520367
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 13 2014 2:02PM