According to the Lefebvre's model and flame volume (FV) concept, an FV model about lean blow-out (LBO) was proposed by authors in early study. On the other hand, due to the model parameter (FV) contained in FV model is obtained based on the experimental data, FV model could only be used in LBO analysis instead of prediction. In view of this, a hybrid FV model is proposed that combines the FV model with numerical simulation in the present study. The model parameters contained in the FV model are all estimated from the simulated nonreacting flows. Comparing with the experimental data for 11 combustors, the maximum and average uncertainties of hybrid FV model are ±16% and ±10%.
A Hybrid Semi-empirical Model for Lean Blow-Out Limit Predictions of Aero-engine Combustors
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 18, 2014; final manuscript received July 24, 2014; published online September 30, 2014. Editor: David Wisler.
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Hu, B., Huang, Y., and Xu, J. (September 30, 2014). "A Hybrid Semi-empirical Model for Lean Blow-Out Limit Predictions of Aero-engine Combustors." ASME. J. Eng. Gas Turbines Power. March 2015; 137(3): 031502. https://doi.org/10.1115/1.4028394
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