Numerical simulation of premixed turbulent methane combustion in a multi-inlet cyclone combustor


Yerzhan A., İLBAŞ M.

JOURNAL OF POLYTECHNIC-POLITEKNIK DERGISI, 2024 (ESCI) identifier

Abstract

The multi-inlet cyclone combustion chamber simulated in this study has 14 tangential gas/air inlets, each with an internal diameter of 9.525 mm, and is inclined 30 degrees towards the front end of the combustion chamber in 2 symmetrical rows of seven. This study used CFD code to numerically simulate a multi-inlet cyclone combustor fueled by methane. The standard k-epsilon model was chosen to simulate turbulent flow. Eddy Dissipation was used to simulate the combustion of a premixed mixture. The simulation was carried ou t for an air:fuel ratio (phi) of 1.0. The design velocity at the entrance to the combustion chamber is 20 m/s. In all cases, the inlet gas temperature was assumed to be T=300 K. The number of iterations was 3000. The other physical constans were taken from the literature. The computational default value was used for the operating pressure. The results of the study showed that the proposed cyclonic combustor provides better fuel mixing, increases the residence time of the fuel in the combustor, achieves a uniform temperature field and reduces emissions.