Non-Reacting and Combusting Flow Investigation of Bluff Bodies in Cross Flow

Kiel, Barry; Garwick, Kyle; Lynch, Amy; Gord, James R.; Meyer, Terrence R.

doi:10.2514/6.2006-5234

Cited by 42 publications

(18 citation statements)

References 6 publications

(11 reference statements)

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“…The kinematic viscosity was computed using the equilibrium solver, GasEq, based on the reactant composition, pressure and temperature. The Reynolds number scaling assumes a laminar boundary layer, with the constant determined by fitting to the measured velocity profiles from Kiel et al [91]. Similarly, several velocity scales are available.…”

Section: Characteristic Chemical and Flow Time Calculationsmentioning

confidence: 99%

Lean blowoff of bluff body stabilized flames: Scaling and dynamics

Shanbhogue

Husain

Lieuwen

2009

Progress in Energy and Combustion Science

520

206

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Section: Characteristic Chemical and Flow Time Calculationsmentioning

confidence: 99%

Lean blowoff of bluff body stabilized flames: Scaling and dynamics

Shanbhogue

Husain

Lieuwen

2009

Progress in Energy and Combustion Science

520

206

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“…As the V-gutter cross flow has its own characteristics, the experimental data of Barry Kiel [3] was used select the …”

Section: Discussionmentioning

confidence: 99%

“…As the V-gutter cross flow has its own characteristics, the experimental data of Barry Kiel [3] was used select the suited turbulence model. This paper selects several commonly used RANS turbulence models to do numerical verification, and the Realizable model's results are in good agreement with the experimental data.…”

Section: Methodsmentioning

confidence: 99%

Study on the Vortex Shedding Mechanism of Coupling Combustion Stabilizer with V-gutter and Strong Swirl Flow

Dong

Zhang

2015

Procedia Engineering

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Both the strong swirl and the flow around blunt bodies can form low velocity recirculation zone to stabilize combustion of highspeed gas. Compared with the vortex shedding mechanism of the V-gutter blunt, the computational results show that the vortex shedding mechanism of the coupling combustion stabilizer is controlled by the vortex of the swirling flow. Also, the flow around bluff body with swirling flow through the central opening can reduce drag, increase the length of the recirculation zone and reflux mass, and increase the number of vortexes so as to enhance the heat and mass transfer. Thus, coupling combustion stabilizer can enhance the stability of flame

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“…The representative work on this topic was conducted by Kiel et al [20][21]. The most distinctive characteristic of this method is selecting the Damköhler (Da) number as the stability criteria of flame.…”

Section: Numerical Based Hybrid 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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Non-Reacting and Combusting Flow Investigation of Bluff Bodies in Cross Flow

Cited by 42 publications

References 6 publications

Lean blowoff of bluff body stabilized flames: Scaling and dynamics

Lean blowoff of bluff body stabilized flames: Scaling and dynamics

Study on the Vortex Shedding Mechanism of Coupling Combustion Stabilizer with V-gutter and Strong Swirl Flow

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

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