• Vijaya kumar R
• Syed Mohsin

CFD investigations are carried out by varying geometric parameters to study the cavity influences on the combustion at subsonic speed, in a simple combustor with and without cavity. The kerosene, hydrogen and high octane fuels are injected at Mach number of 0.8 to Mach number 0.3 airstream. The Combustion efficiency for the different fuels are found and compared that to be hydrogen is greater than high octane and kerosene fuels. The pressure losses in the combustor with hydrogen fuel are less compared to that of kerosene and high octane fuels. In hydrogen fuel there is 20.05% increase in combustion efficiency in a combustor with cavity compared to without cavity, in high octane fuel there is 19.90% increase in combustion efficiency, in kerosene fuel there is 14.55% increase in combustion efficiency. As per the results from the present study that the combustion efficiency is high in the presence of cavity at subsonic flows. Hydrogen Fuel is efficient for combustion compare to that of kerosene and high octane fuels. This work was carried by using computational software package Fluent and Gambit

Cavity, Combustion efficiency, hydrogen fuel, Computational Fluent and Gambit.

"“Computational Investigation of Combustion in a Cavity”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 8, page no.239-242, August-2018, Available :http://www.jetir.org/papers/JETIR1808330.pdf

"“Computational Investigation of Combustion in a Cavity”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 8, page no. pp239-242, August-2018, Available at : http://www.jetir.org/papers/JETIR1808330.pdf