Progress in analytical methods to predict and control azimuthal combustion instability modes in annular chambers [PDF]
, 2016 Longitudinal low-frequency thermoacoustic unstable modes in combustion chambers have been intensively studied experimentally, numerically, and theoretically, leading to significant progress in both understanding and controlling these acoustic modes ...
Bauerheim, Michaël +2 more
core +3 more sources
Energy Applications of Magnetocaloric Materials
Advanced Energy Materials, Volume 10, Issue 10, March 10, 2020., 2020 The quest for energy‐efficient and environmentally friendly energy conversion technologies is more urgent than ever. Magnetocaloric energy conversion is among the best available alternatives to existing technologies. This article gives an overview of energy applications of magnetocaloric materials.
Andrej Kitanovski
wiley +1 more source
A Green's function approach to predict nonlinear thermoacoustic instabilities in combustors [PDF]
, 2016 The prediction of thermoacoustic instabilities is fundamental for combustion systems such as domestic burners and industrial gas turbine engines. High-amplitude pressure oscillations cause thermal and mechanical stress to the equipment, leading to ...
Bigongiari, A, Heckl, MA
core +2 more sources
Numerical Investigation of the Wake Vortex‐Related Flow Mechanisms in Transonic Turbines
International Journal of Aerospace Engineering, Volume 2020, Issue 1, 2020., 2020 As the core equipment of the power generation system, a gas turbine is an indispensable energy‐converting device in the national industry. The flow inside a high‐pressure turbine (HPT) is highly unsteady, which has a great influence on the aerothermal performance and structural strength.
Guoliang Wang +3 more
wiley +1 more source
Journal of the Global Power and Propulsion Society, 2018 Recently, because of environmental regulations, gas turbine manufacturers are restricted to produce machines that work in the lean combustion regime. Gas turbines operating in this regime are prone to combustion-driven acoustic oscillations referred as ...
Dmytro Iurashev +5 more
doaj +1 more source
LES evaluation of the effects of equivalence ratio fluctuations on the dynamic flame response in a real gas turbine combustion chamber [PDF]
, 2013 Large Eddy Simulations (LES) of a lean swirl-stabilized gas turbine burner are used to analyze mechanisms triggering combustion instabilities. To separately study the effect of velocity and equivalence ratio fluctuations, two LES of the same geometry are
Gicquel, Laurent Y.M. +3 more
core +4 more sources
, 2021 This study deals with the fundamental problem of combustion dynamics in gas turbine combustors operating with liquid fuel. In this framework the present work proposes the study of an academic liquid fueled combustor sensitive to thermoacoustic ...
E. L. Schiavo +4 more
semanticscholar +1 more source
Early Detection of Thermoacoustic Instabilities in a Cryogenic Rocket Thrust Chamber using Combustion Noise Features and Machine Learning [PDF]
Chaos, 2020 We present a data-driven method for the early detection of thermoacoustic instabilities. Recurrence quantification analysis is used to calculate characteristic combustion features from short-length time series of dynamic pressure sensor data.
Günther Waxenegger-Wilfing +6 more
semanticscholar +1 more source
Advances and Challenges in Thermoacoustic Network Modeling for Hydrogen and Ammonia Combustors
EnergiesThe transition to low-carbon energy systems has heightened interest in hydrogen and ammonia as sustainable alternatives to traditional hydrocarbon fuels.
Seungmin Guk +3 more
doaj +1 more source
Non-linear simulations of combustion instabilities with a quasi-1D Navier-Stokes code
, 2010 As lean premixed combustion systems are more susceptible to combustion instabilities than non-premixed systems, there is an increasing demand for improved numerical design tools that can predict the occurrence of combustion instabilities with high ...
Allam +29 more
core +1 more source