Numerical Study of the Effects of Gas Turbine Injector Characteristics on the Penetration Length of Liquid Fuel

In the present work, the injector of a gas turbine is simulated using computational fluid dynamics. The penetration length of the injector under certain conditions has been validated by the results of laboratory tests. Then, the effects of turbulence model type, spray parameters on fuel penetration length due to change of spray pressure, spray cone angle, pressure, and temperature of the combustion chamber are investigated. The amount of evaporated fuel at different temperatures and the jet width of the fuel at different spray pressures is presented as an innovation of the paper. The results showed that increasing the injection pressure increased the penetration length and jet width of the fuel and also with increasing the spray cone angle and increasing the combustion chamber pressure, the penetration length decreased. With increasing ambient temperature from 300 to 450 K, evaporated mass of the fuel has increased. The jet width of the fuel is increased by 2, 3, and 4 times the spray pressure.