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 hasbeen 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 onlybased on fuel species transport without taking evaporation and/oratomization into account. This issue reduces actual amount of flamevolume. The values of 𝑞𝐿𝐵𝑂 (overall fuel-air ratio at lean blow out)predicted by HST, HSS and LSC were compared to experimentalresults. The error of (HST-FM & SM) method was 11.48 and 1.86percent and (HSS-FM & SM) method was 6.15 and 2.2 percent and(LSC) was 46.73 percent.