Experimental study on self-excited thermoacoustic instabilities and intermittent switching of azimuthal and longitudinal modes in an annular combustor
For annular combustors, the interactions between different modal structures (longitudinal,
azimuthal spinning, standing, and slanted) remain a challenge in ongoing studies of …
azimuthal spinning, standing, and slanted) remain a challenge in ongoing studies of …
[HTML][HTML] Lean methane flame stability in a premixed generic swirl burner: Isothermal flow and atmospheric combustion characterization
J Runyon, R Marsh, P Bowen, D Pugh, A Giles… - … Thermal and Fluid …, 2018 - Elsevier
Gas turbine combustors operating in lean premixed mode are known to be susceptible to
flame blowoff due to competing influences of increasing chemical timescales and …
flame blowoff due to competing influences of increasing chemical timescales and …
Direct and indirect noise generated by entropic and compositional inhomogeneities
Flow disturbances are generated inside a duct via pulsed injection of helium into a flow of
air. This leads to the generation of an acoustic pulse (direct noise), as well as the production …
air. This leads to the generation of an acoustic pulse (direct noise), as well as the production …
[HTML][HTML] A novel gas turbine simulator for testing hybrid solar-Brayton energy systems
A novel gas turbine simulator is developed to establish controllable boundaries for
investigating the characteristics of key components in gas turbine based hybrid energy …
investigating the characteristics of key components in gas turbine based hybrid energy …
Theory and application of reverberated direct and indirect noise
The generation of a temperature disturbance in a flow is accompanied by the production of
acoustic waves (direct noise) and of an entropy perturbation. If this entropy perturbation is …
acoustic waves (direct noise) and of an entropy perturbation. If this entropy perturbation is …
Effects of background noises on nonlinear dynamics of a modelled thermoacoustic combustor
X Li, D Zhao, X Li - The Journal of the Acoustical Society of America, 2018 - pubs.aip.org
In this work, the effects of background noises on nonlinear dynamics of a modelled standing-
wave thermoacoustic system with subcritical Hopf bifurcation behaviors are studied. These …
wave thermoacoustic system with subcritical Hopf bifurcation behaviors are studied. These …
Numerical investigation on the generation, mixing and convection of entropic and compositional waves in a flow duct
Recent models and experiments have demonstrated that indirect noise can be generated
via acceleration of either entropic or compositional perturbations through a nozzle. These …
via acceleration of either entropic or compositional perturbations through a nozzle. These …
[PDF][PDF] Gas turbine fuel flexibility: pressurized swirl flame stability, thermoacoustics, and emissions
JON Runyon - 2017 - academia.edu
GAS TURBINE FUEL FLEXIBILITY: PRESSURIZED SWIRL FLAME STABILITY,
THERMOACOUSTICS, AND EMISSIONS BY JON RUNYON CARDIFF UNIVERSIT Page 1 …
THERMOACOUSTICS, AND EMISSIONS BY JON RUNYON CARDIFF UNIVERSIT Page 1 …
[HTML][HTML] A dual-flow choked nozzle based precise pressure controller for high-temperature gas systems
A novel dual-flow choked nozzle based pressure controller is developed to achieve high-
precision pressure control. The primary air flow is mainly used for offering the required mass …
precision pressure control. The primary air flow is mainly used for offering the required mass …
Experimental and numerical investigation of direct and indirect combustion noise contributions in a lean premixed laboratory swirled combustor
N Kings, W Tao, P Scouflaire, F Richecoeur… - ASME Turbo Expo …, 2016 - hal.science
Combustors are contributing to the core noise emission of aero-engines in terms of direct
and indirect combustion noise. The first is caused by the unsteady heat release rate, the …
and indirect combustion noise. The first is caused by the unsteady heat release rate, the …