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The transfer function of premixed turbulent jet flames
Symposium (International) on Combustion, 1971For low-frequency pressure oscillations in combustion chambers, the transfer function of the flame is an important parameter. This transfer function represents the dependence between the burned and injected mass-flow rate on the pressure oscillations. The stability region of a system can be defined only if the transfer function is known. In this paper,
R. Becker, R. Günther
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Optical Transfer Function Measurements for Technically Premixed Flames
Volume 3: Combustion, Fuels and Emissions, Parts A and B, 2008This paper deals with a novel approach for measuring thermo-acoustic transfer functions. These transfer functions are essential to predict the acoustic behavior of gas turbine combustion systems. Thermoacoustic prediction has become an essential step in the development process of low-NOx combustion systems. The proposed method is particularly useful in
Bruno Schuermans +2 more
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Modeling tools for the prediction of premixed flame transfer functions
Proceedings of the Combustion Institute, 2002The response of flames to incident perturbations is of central interest in combustion dynamics analysis. The problem can be described in the linear regime by a transfer function. It is shown in this article that the description of the perturbed velocity field incident on the flame front is of crucial importance when dealing with the flame transfer ...
Schuller, Thierry +3 more
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Impact of flame-wall interaction on premixed flame dynamics and transfer function characteristics
Proceedings of the Combustion Institute, 2011Abstract In this paper, we numerically investigate the response of a perforated-plate stabilized laminar methane–air premixed flame to imposed inlet velocity perturbations. A flame model using detailed chemical kinetics mechanism is applied and heat exchange between the burner plate and the gas mixture is incorporated.
Kedia, K.S., Altay, H.M., Ghoniem, A.F.
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Influence of the Swirler Design on the Flame Transfer Function of Premixed Flames
Volume 2: Turbo Expo 2005, 2005A novel approach to the description of flame transfer functions of premixed swirling flames is presented based on a simplified analysis of the vorticity transport equation. With this model it is possible to reproduce transfer function amplitude in excess of unity observed for swirling flames as well as to explain the differences seen in flame transfer ...
C. Hirsch +4 more
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On the low-frequency limit of flame transfer functions
Combustion and Flame, 2007The response of a premixed flame to quasi-steady flow perturbations is considered. It is found that in this low-frequency limit, constraints on the flame transfer function can be established from global conservation laws for mass, energy, and momentum.
Wolfgang Polifke, Chris Lawn
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Study of Flame Transfer Function With Three Dimensional Calculations
Volume 2: Turbo Expo 2003, 2003Combustors with fuel-spray atomisers are particularly susceptible to a low-frequency oscillation at idle and sub-idle conditions. For aero-engine combustors, the frequency of this oscillation is typically in the range 70–120Hz and is commonly called ‘rumble’.
M. Zhu, A. P. Dowling, K. N. C. Bray
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Flame Transfer Function Measurements in a Single Nozzle Combustor
Volume 2: Combustion, Fuels and Emissions, Parts A and B, 2011This paper describes an experimental investigation of Flame Transfer Function (FTF) behavior where the response of a swirl-stabilized, natural gas fueled combustor is measured for partially premixed conditions. Controlled perturbations of the combustor inlet flows are produced using a siren and the combustor response is observed using several ...
Shawn D. Wehe +2 more
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Flame Transfer Function of a Swirl Ammonia-Air Premixed Flame
2022Shohdy, Nader N. +2 more
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