Influence of Different Two-Phase Velocities on the Simulated Swirling Spray Flame Flows

Abstract

The effects of thermal radiation at various swirl levels of primary air flow have been numerically simulated, various velocities (4 m/s, 8 m/s and 16 m/s) as has the combustion of the kerosene fuel spray. used radiation models and the realizable k-model to simulate turbulent quantities. A model with thorough kerosene combustion dynamics is projected using an empirical model with kerosene fuel-specific model parameters. In order to forecast the incident heat flux on the combustor wall and fuel injector, contributions from the gas phase and thermal radiation have been taken into account. The primary flow's swirl has a big impact on the combustor's flow and flame structures. More air is drawn into the flame zone by the higher recirculation at a high swirl, which both shortens the flame and lowers the peak flame temperature while bringing more air to the input plane. As a result, at a high swirl, the radiative heat flow on the peripheral wall diminishes and moves inward toward the inlet plane. However, due to the flame expanding radially, increasing swirl raises the temperature of the combustor wall. The fuel injector is an essential component of the combustor due to the high incident radiant heat flux and high surface temperature. Because of the flame's proximity to the inlet plane, the injector's peak temperature rises as the swirl flow increases. On the other hand, strong swirl conditions near the combustor outlet can result in a more uniform temperature distribution in the exhaust stream. The results of the numerical simulation are compared with the experimental data. The results showed that the swirl angle (40°, 50°, and 60°) and velocity (8 m/s) provided good results through temperature, incidence radiation, turbulent kinetic energy and species.