Phase-opposition control of the precessing vortex core in turbulent swirl flames for investigation of mixing and flame stability
The precessing vortex core (PVC) is a helically shaped coherent flow structure that occurs in
reacting and nonreacting swirling flows undergoing vortex breakdown. In swirl-stabilized …
reacting and nonreacting swirling flows undergoing vortex breakdown. In swirl-stabilized …
Characterization of different actuator designs for the control of the precessing vortex core in a swirl-stabilized combustor
The precessing vortex core (PVC) represents a helical-shaped coherent flow structure
typically occurring in both reacting and nonreacting swirling flows. Until now, the …
typically occurring in both reacting and nonreacting swirling flows. Until now, the …
Impact of the Precessing Vortex Core on NOx Emissions in Premixed Swirl-Stabilized Flames—An Experimental Study
The reduction of NOx emissions remains a driving factor in the design process of swirl-
stabilized combustion systems, to meet legislative restrictions. In reacting swirl flows …
stabilized combustion systems, to meet legislative restrictions. In reacting swirl flows …
Open-loop control of the precessing vortex core in a swirl-stabilized combustor: impact on flame shape and flame stability
In this study, we apply periodic flow excitation of the PVC at the centerbody of a generic swirl-
stabilized combustor to investigate the impact of the precessing vortex core (PVC) on flame …
stabilized combustor to investigate the impact of the precessing vortex core (PVC) on flame …
Formation and flame-induced suppression of the precessing vortex core in a swirl combustor: experiments and linear stability analysis
K Oberleithner, M Stöhr, SH Im, CM Arndt… - Combustion and …, 2015 - Elsevier
The precessing vortex core (PVC) is a coherent flow structure that is often encountered in
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …
Guiding actuator designs for active flow control of the precessing vortex core by adjoint linear stability analysis
The fundamental impact of the precessing vortex core (PVC) as a dominant coherent flow
structure in the flow field of swirl-stabilized gas turbine combustors has still not been …
structure in the flow field of swirl-stabilized gas turbine combustors has still not been …
Precessing Vortex Core Suppression in a Swirl Stabilized Combustor With Hydrogen Addition
Self-excited flow oscillations such as the precessing vortex core (PVC) in swirl nozzle
combustion systems can significantly impact combustor operation by impacting unsteady …
combustion systems can significantly impact combustor operation by impacting unsteady …
Impact of a centerbody on the unsteady flow dynamics of a swirl nozzle: Intermittency of precessing vortex core oscillations
S Gupta, S Shanbhogue… - … for Gas Turbines …, 2022 - asmedigitalcollection.asme.org
The precessing vortex core (PVC) is a self-excited flow oscillation state occurring in swirl
nozzles. This is caused by the presence of a marginally unstable hydrodynamic helical …
nozzles. This is caused by the presence of a marginally unstable hydrodynamic helical …
Studies of the precessing vortex core in swirling flows
MO Vigueras-Zuniga, A Valera-Medina… - Journal of applied …, 2012 - scielo.org.mx
Large scale coherent structures play an important role in the behavior of the combustion
regime inside any type of combustor stabilized by swirl, with special impact on factors such …
regime inside any type of combustor stabilized by swirl, with special impact on factors such …
Experimental study of vortex-flame interaction in a gas turbine model combustor
The interaction of a helical precessing vortex core (PVC) with turbulent swirl flames in a gas
turbine model combustor is studied experimentally. The combustor is operated with air and …
turbine model combustor is studied experimentally. The combustor is operated with air and …