THE EFFECT OF KINETIC MECHANISM AND TURBULENCE ON THE COMBUSTION PROCESS

E. Affad1*, D. Puechberty2, C. Kennel3, M. Assou4

1 Université Hassan II FST de Mohammedia, PB 146, Quartier Yassmina, Morocco

2 Université de Rouen place Emile Blondel URA 230 CNRS/CORIA,

76821 Mont Saint Aignan cedex, France

3 Peugeot Citroen (PSA), Route de Gizy, La Garenne Colombes-Paris, France

4 Laboratoire de Thermodynamique -Université de Liège, Belgique

* Corresponding author. E-mail: eaffad@hotmail.com

Received :11June 2001; revised version accepted 24 January 2002

Abstract

The modelisation of combustion is central problem in most practical combustion system. In this work, turbulent combustion is discussed with a lagrangian model, which is useful for the study of turbulent combustion problem. A coupling between this lagrangian model and the presumed probability density function (pdf) method is used with complex chemistry. The validation of the kinetic mechanism was envisaged before integrated it in the computer code for reciprocating engines. The results of computations with the present models are compared with the experimental results obtained from experience obtained in our laboratory and from PSA (Peugeot – Citroen) engine. The comparisons between the results of the modeling and the experiments showed a good agreement.

Keywords: Combustion; Kinetic mechanism; Reduced mechanism; Detailed mechanism; Emission.

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