ASPECTS REGARDING THE INTERNAL FLOW IN A TURBOJET ENGINE EQUIPED WITH AFTERBURNER COMBUSTION

摘要

Afterburner is a long extension of the rear portion of the jet engine which mixes a large amount of the remained oxygen with the jet fuel which has entered into the turbine outlet and then burns the mixture. In this research, flow in the afterburner of aircraft engine is analyzed by numerical methods. Flow simulation inside of the afterburner considers two dimensional and axial symmetry to be turbulence and k-ε model has been used for turbulence analysis. Furthermore, Probability Density Function (PDF) method is used to model the combustion process inside the afterburner. The paper presents the results for two cases - when the afterburner system is used end not.