... Abstract Can and can-annular (can-type) combustors are widely employed in stationary gas turbines. While majority of combustion instability research so far has focused on single can combustors, studying combustion dynamics in multi-can configurations holds more practical relevance. In can-type...

... predictions. Keywords: Premixed flame, Flame transfer function (FTF), Linear flame response, Velocity coupled response, Combustion instabilities, Vortical disturbances, Heat release rate NOMENCLATURE FTF Flame transfer function LNSE Linearized Navier Stokes Equation MAE SHGO SLSQP Mean Absolute Error...

.... The resulting relationship between the injector’s flow and local hydrodynamics can then be used in a hydrodynamics study of an individual injector so that the most optimal injector is chosen depending on its location in the combustor dump plane. high frequency combustion instabilities multi-nozzle...

... fuel staging, however, the pressure magnitude is considerably reduced, which provides a potential strategy to mitigate and/or suppress the instabilities. combustion instabilities thermoacoustics azimuthal mode dynamical system fuel staging Proceedings of ASME Turbo Expo 2021...

... insights on designing nozzle locations around the center nozzle for minimal amplification of a given transverse mode. high frequency combustion instabilities multi-nozzle Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual...

.... hydrogen micromix combustion CFD combustion instabilities Proceedings of ASME Turbo Expo 2021 Turbomachinery Technical Conference and Exposition GT2021 June 7-11, 2021, Virtual, Online GT2021-59842 NUMERICAL INVESTIGATION OF POTENTIAL CAUSE OF INSTABILITIES IN A HYDROGEN MICROMIX INJECTOR ARRAY...

..., as a function of the flow perturbations in the premix duct. This approach is demonstrated for an annular ring of burners on a in a simple geometry. The approach is then extended to an industrial type gas turbine combustor, and used to predict the limit cycle amplitudes. Combustion Instabilities G...

... Lean low emission combustors are prone to combustion instabilities. Therefore integrating damping devices into the cooling concept is a viable approach. Information on the impact of pressure fluctuations caused by combustion instabilities on the cooling performance of both acoustic-focused...

... for developing control strategies. Combustion Instabilities G-Equation Thermoacoustics Gas Turbines Premixed Flames Proceedings of The ASME Turbo Expo ASME2011 June 06-11, 2011, Vancouver, Canada GT2011-45255 LOW-ORDER MODELLING OF DUCTED FLAMES WITH TEMPORALLY VARYING EQUIVALENCE RATIO IN REALISTIC...

...-Vaporized ( LPP ) combustion. However, serious problems concerning combustion-driven instabilities occurred with the implementation of the LP/LPP-concept. Today, prediction and systematic suppression of self-sustained combustion instabilities is an issue still unsolved, due to incomplete understanding...

... the underlying physics controlling the phenomenon. 10 03 2009 Combustion Instabilities Swirling Flow Proceedings of GT2007 ASME Turbo Expo 2007: Power for Land, Sea and Air May 14-17, 2007, Montreal, Canada 1 Copyright © 2007 by ASME fluorescence (PLIF) measurements at several representative...

... For 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...

... This paper describes an experimental investigation of the feasibility of using “slow” active control approaches, which change liquid fuel spray properties, to suppress combustion instabilities. The objective of this control approach is to break up the feedback between the combustion process heat...

... The understanding of the formation of self excited pressure oscillations in technical combustion systems depends on the knowledge of the dynamical behaviour of the flame used. As an important mechanism driving these combustion instabilities the formation and reaction of coherent large-scale ring...

... The prediction and the systematic suppression of self-sustained combustion instabilities in combustors for gas turbine applications still suffer from incomplete physical understanding of the feedback mechanisms and lack of experimental data of the dynamic flame characteristics of L ean- P...