Numerical simulation on a certain trapped vortex combustor

A fuel injector was designed for a certain type of trapped vortex combustor. Then, experiments were conducted to check its atomizing performance under various conditions, including different gas to liquid ratios, gas pressures and liquid pressures. The cold and hot simulations of the combustor were conducted to study the performance, and the velocity field, the temperature field and mass fraction distribution of the combustor were obtained. The simulation results show that the combustor is reasonably designed with compact structure and high combustion efficiency. The wall temperature distribution of the cavity is ideal. The changing regularity of the pressure loss and the outlet temperature distribution were obtained by numerical simulation and experimental research. The total pressure loss of the combustor is a bit larger and the temperature distribution of outlet is uniform. The results can provide relevent reference for the engineering application of the trapped vortex combustor.