a hybrid method for prediction of lean blow out in a turbine engine combustion chamber

three methods for prediction of lean blowout in a turbine engine has been introduced. the first method is a hybrid simulation-test (hst), the second is a hybrid simulation-semi empirical correlation (hss) and the third one is based on lefebvre’s semi-empirical correlation (lsc). before this research, calculation of parameters is done only based on fuel species transport without taking evaporation and/or atomization into account. this issue reduces actual amount of flame volume. the values of 𝑞𝐿𝐵𝑂 (overall fuel-air ratio at lean blow out) predicted by hst, hss and lsc were compared to experimental results. the error of (hst-fm sm) method was 11.48 and 1.86 percent and (hss-fm sm) method was 6.15 and 2.2 percent and (lsc) was 46.73 percent.