Entropy and flame transfer function analysis of a hydrogen-fueled diffusion flame in a longitudinal combustor [PDF]
Energy, 2020 In this work, entropy generation and flame transfer function investigations are conducted on a hydrogen-burnt diffusion flame in a longitudinal combustor with acoustic waves present.
Yuze Sun, Dan Zhao, Siliang Ni
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Measuring the flame transfer function of turbulent non-premixed syngas flames
, 2006 Syngas is a fuel, obtained from gasification of coal or other heavy hydrocarbons. It is used to fire gas turbines. Syngas consists of hydrogen (H2), carbon monoxide (CO) and some inert components like nitrogen (N2) or water vapour (H2O). Sometimes methane (CH4) is present.
Pater, Sjoerd G.M. +2 more
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Tailoring the gain and phase of the flame transfer function through targeted convective-acoustic interference [PDF]
Combustion and Flame, 2022 This paper investigates how targeted interference between two well characterized sources of hydrodynamic disturbances can modify the response of premixed bluff body stabilised flames with and without swirl.
Eirik Æsøy +2 more
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Pressure Influence on the Flame Transfer Function of a Premixed Swirling Flame
Volume 1: Combustion and Fuels, Education, 2006In order to assess the stability of gas turbine combustors measured flame transfer functions are frequently used in thermoacoustic network models. Although many combustion systems operate at high pressure, the measurement of flame transfer functions was essentially limited to atmospheric conditions in the past.
E. Freitag +4 more
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Development of a Flame Transfer Function Framework for Transversely Forced Flames
Volume 1B: Combustion, Fuels and Emissions, 2013This paper describes a framework for the development of a flame transfer function for transversely forced flames. While extensive flame transfer function measurements have been made for longitudinally forced flames, the disturbance field characteristics governing the flame response of a transversely forced flame are different enough to warrant separate
Jacqueline O’Connor, Vishal Acharya
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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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Flame Transfer Function Characteristics of Swirl Flames for Gas Turbine Applications
Volume 2: Turbo Expo 2003, 2003For the suppression or reduction of self-sustained combustion instabilities, modifications of the burner outlet conditions, that strongly influence the dynamic flame response, seem to be the most promising way. Therefore, to derive a detailed physical understanding of the feedback mechanisms the dynamic flame response characteristics, quantified by ...
Martin Lohrmann +3 more
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The Effects of Forcing Direction on the Flame Transfer Function of a Lean-Burn Spray Flame
Volume 3B: Combustion, Fuels, and Emissions, 2021Abstract The flame transfer function (FTF) of an industrial lean-burn fuel injector has been computed using large eddy simulation (LES) and compared to experimental measurements using the multi-microphone technique and OH* measurements.
Nicholas C. W. Treleaven +5 more
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Validation of Flame Transfer Function Reconstruction for Perfectly Premixed Swirl Flames
Volume 1: Turbo Expo 2004, 2004The introduction of lean premix combustion increases the susceptibility of the combustor to thermoacoustic instabilities. To control these instabilities, information about the dynamic behavior of the combustion process is necessary. The flame transfer function offers one possibility to describe the dynamic behavior of the combustion process. It relates
A. Gentemann +5 more
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On the spatial characteristics of the flame transfer function for a GCH4-GO2 swirl coaxial flame
Acta AstronauticaJinhyun Bae, Youngbin Yoon
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