Interference mechanisms of acoustic/convective disturbances in a swirl-stabilized lean-premixed combustor

KT Kim, DA Santavicca - Combustion and Flame, 2013 - Elsevier
Interference mechanisms of acoustic/convective disturbances were experimentally
investigated in a swirl-stabilized lean-premixed gas turbine combustor operated with natural …

Combustion instability feedback mechanisms in a lean-premixed swirl-stabilized combustor

KT Kim - Combustion and Flame, 2016 - Elsevier
Constructive interference between heat release rate and acoustic perturbation is
responsible for the growth of acoustic pressure amplitudes, leading to high-amplitude …

Effect of swirl on combustion dynamics in a lean-premixed swirl-stabilized combustor

Y Huang, V Yang - Proceedings of the combustion institute, 2005 - Elsevier
The effect of inlet swirl on the flow development and combustion dynamics in a lean-
premixed swirl-stabilized combustor has been numerically investigated using a large-eddy …

Contributions of hydrodynamic features of a swirling flow to thermoacoustic instabilities in a lean premixed swirl stabilized combustor

B Zhang, M Shahsavari, Z Rao, S Yang, B Wang - Physics of Fluids, 2019 - pubs.aip.org
A comprehensive study on influences of hydrodynamic features of a swirling flow on
thermoacoustic instabilities in a swirl stabilized combustor is performed by using large eddy …

Response of partially premixed flames to acoustic velocity and equivalence ratio perturbations

KT Kim, JG Lee, BD Quay, DA Santavicca - Combustion and Flame, 2010 - Elsevier
This article describes an experimental investigation of the forced response of a swirl-
stabilized partially premixed flame when it is subjected to acoustic velocity and equivalence …

Combined effect of spatial and temporal variations of equivalence ratio on combustion instability in a low-swirl combustor

S Tachibana, K Kanai, S Yoshida, K Suzuki… - Proceedings of the …, 2015 - Elsevier
In this experimental study, the combined effect of spatial and temporal variations of fuel–air
mixture on self-excited combustion instabilities in a gas-turbine model combustor (∼ 60 kW) …

An experimental investigation of thermoacoustic instabilities in a premixed swirl-stabilized flame

D Fritsche, M Füri, K Boulouchos - Combustion and Flame, 2007 - Elsevier
Modern gas turbines use lean premixed combustion to achieve the best compromise
between pollutant emissions and efficiency. This type of combustion increases the flame …

Further characterization of the disturbance field in a transversely excited swirl-stabilized flame

J O'Connor, T Lieuwen - 2012 - asmedigitalcollection.asme.org
This paper describes an analysis of the unsteady flow field in swirl flames subjected to
transverse acoustic waves. This work is motivated by transverse instabilities in annular gas …

Swirl control of combustion instabilities in a gas turbine combustor

C Stone, S Menon - Proceedings of the Combustion Institute, 2002 - Elsevier
The impact of premixer swirl number, S, and overall fuel equivalence ratio, Φ, on the stability
of a model swirl-stabilized, lean-premixed gas turbine combustor has been numerically …

Characterization of acoustically forced swirl flame dynamics

SK Thumuluru, T Lieuwen - Proceedings of the Combustion Institute, 2009 - Elsevier
Lean premixed combustors are highly susceptible to combustion instabilities, caused by the
coupling between heat release fluctuations and combustor acoustics. In order to predict the …