Abstract
There have been concerted efforts towards improving the fuel efficiency of the jet engines in the past, with an aim of reducing the incomplete combustion. The process of combustion in a jet engine takes place in the combustor. A study was conducted for enhancement of air-fuel mixing process by computational analysis of an elliptically shaped combustor for a gas turbine engine. The results of computational analysis of an elliptical shape combustor were compared with a circular shape combustor used in gas turbine engines with a identical cross sectional area. The comparison of the computationally derived parameters of the two combustors i.e. temperature, pressure, and velocity are studied and analyzed. The study intends towards the comparison of the combustion efficiencies of the circular and elliptically shaped combustors. The combustion efficency of elliptical chamber is found to be 98.72% at the same time it was observed 56.26% in case of circular type combustor.
Highlights
Since the time aircrafts have taken off, the aviation industry has made strident efforts to upgrade aircraft technology to improve its efficiency
The air from the compressor enters the combustor at a high velocity upto 500 ft/s, which is too high for combustion [2]
The air entering the combustor passes through two regions, where 20% of incoming air passes through the snout, while the other 80% of it passes through the passage between the flame tube body and casing
Summary
Since the time aircrafts have taken off, the aviation industry has made strident efforts to upgrade aircraft technology to improve its efficiency. The diffuser is responsible for the reduction in velocity, which helps to maintain a high pressure of the air entering the combustor This allows for the smooth operation of the engine and flame stability. The primary considerations of combustor design are ensuring that pressure loss encountered in the combustor is minimized and a high temperature is achieved without compromising with combustion efficiency While these considerations need to be realized, it must be ensured that there is efficient fuel consumption and low pollutant emissions [1]. The incorporation of the non-circular jets has led to higher combustion efficiency, enhancing combustor performance and reducing the emissions and combustor instabilities [9, 11,12] This had led to an introduction of the elliptical combustor with elliptically-shaped fuel injector nozzle and elliptical holes over the flame tube.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
