Structure of Locally Quenched Swirl Stabilized Turbulent Premixed Flames

Eggenspieler, Gilles; Menon, Suresh

doi:10.2514/6.2004-979

Cited by 11 publications

(7 citation statements)

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“…In practical systems, combustion may span several regimes in their operational envelopes. Although turbulence/ chemistry interactions may occur in the broken reaction zone regime in certain circumstances, for example, near the lean blowout limit (Eggenspieler and Menon [470]), chemical reactions are often confined in thin, sheet-like flamelets under most conditions in many practical combustion devices (Poinsot et al [471], Linan and Williams [472], Peters [468], Driscoll [473]). …”

Section: Regime Diagram Of Premixed Turbulent Combustionmentioning

confidence: 99%

Dynamics and stability of lean-premixed swirl-stabilized combustion

Huang

Yang

2009

Progress in Energy and Combustion Science

1,123

459

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Section: Regime Diagram Of Premixed Turbulent Combustionmentioning

confidence: 99%

Dynamics and stability of lean-premixed swirl-stabilized combustion

Huang

Yang

2009

Progress in Energy and Combustion Science

1,123

459

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“…Menon et al [16][17][18] from Georgia Institute of Technology applied LES to study the LBO of the swirl stabilized premixed flame and the bluff body stabilized premixed flame. Their results showed that LES could capture the detailed flow field including the flame stretching and its effect on flame propagation near the LBO.…”

Section: Numerical Prediction Methodsmentioning

confidence: 99%

On the Quick Prediction of Lean Blowout Limits for Gas Turbine Combustors

Huang¹,

Sun²

2018

dteees

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The lean blowout (LBO) limit plays a critical role in the operation of gas turbine combustors. In order to achieve the quick prediction of the LBO limit, three major prediction tools for the LBO limit, i.e. the semi-empirical correlation, the numerical prediction method and the hybrid prediction method are proposed. The semi-empirical correlations are mainly based on the characteristic time (CT) model and the perfect stirred reactor (PSR) model. The semi-empirical correlations based on the PSR model are widely applied. Among these correlations, Lefebvre's LBO model that had been validated on 8 different aero gas turbine combustors with the uncertainty ±30% is the most successful. Later, many researchers did further studies to improve Lefebvre's LBO model. The numerical prediction methods are reported increasingly with the rapid development of the computing power. Up to now, some researchers validated the numerical prediction methods in 2 different combustor configurations with the prediction uncertainties about ±25%. More studies are required to validate the effects of the combustor configurations and the atomization performances on the LBO limit. The hybrid prediction methods try to combine the semi-empirical correlations with the numerical methods and are widely attempted in recent years. Many researchers have studied the numerical based hybrid method, which needs more validations and general criterions for different configurations and operating conditions. Other researchers have studied the semi-empirical based hybrid method, which has shown good agreement for 11 different combustor configurations with the prediction uncertainties about ±16%. Further improvements are required for all prediction tools to achieve more general and accurate predictions for the LBO limits of gas turbine combustors.

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“…How to predict the LBO limit of a combustor efficiently and accurately based on numerical simulations has become a research focus in the application of combustion engineering. Currently, lots of numerical studies were conducted on the flame dynamics near LBO, such as Menon (LES-LEM [12][13][14][15]), Kim (LES-EBU [16]), Smith (LES [17][18][19]), Gokulakrishnam (LES-EDC [20], ' LES-PDF [21]), etc. An agreement of these studies is reached: (1) local extinction is the necessary stage which the flame has to go through before the entire extinction, (2) the development of the local extinction has direct impacts on the entire extinction.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Semi-empirical Model for Lean Blow-Out Limit Predictions of Aero-engine Combustors

Huang

2014

Journal of Engineering for Gas Turbines and Power

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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 com bustors, the maximum and average uncertainties of hybrid FV model are ±16% and ±10%.

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Structure of Locally Quenched Swirl Stabilized Turbulent Premixed Flames

Cited by 11 publications

References 0 publications

Dynamics and stability of lean-premixed swirl-stabilized combustion

Dynamics and stability of lean-premixed swirl-stabilized combustion

On the Quick Prediction of Lean Blowout Limits for Gas Turbine Combustors

A Hybrid Semi-empirical Model for Lean Blow-Out Limit Predictions of Aero-engine Combustors

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