Computational Fluid Dynamic Model of CFM56 Turbofan Engine Combustion Chamber

Abstract

Nowadays, similarly to the other fields of transportation, aviation searches for alternatives in order to replace conventional fossil fuels. However, the proven engine hardware is not able to support arbitrary combustion processes, during the selection of the alternatives, besides the momentary impact on performance, the long-term consequences must also be taken into account. In the present paper, the authors develop the three-dimensional model of the combustion chamber from a CFM56-5 high bypass ratio turbofan engine, which is in service in the Hungarian Defence Forces as the power plant of Airbus A319 transport aircraft. The computational fluid dynamics investigation was carried out with conventional jet fuel in order to allow comparison with the real data available from operation of the engine. After validation, the model is found to be correct, thus, it will be suitable for the assessment of alternative fuels in the subsequent part of the research.