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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
Simulation of 2-way fluid structure interaction in a 3D model combustor [PDF]
, 2012 The liner of a gas turbine combustor is a very flexible structure that is exposed to the pressure oscillations that occur in the combustor. These pressure oscillations can be of very high amplitude due to thermoacoustic instability, when the fluctuations
Alemela, P.R., Kok, J.B.W., Shahi, M.
core +7 more sources
Fluids, 2022 Convective velocity perturbations (CVPs) are known to play an important role in the response of flames to acoustic perturbations and in thermoacoustic combustion instabilities.
Thomas Steinbacher, Wolfgang Polifke
doaj +1 more source
Seeds of phase transition to thermoacoustic instability [PDF]
New Journal of Physics, 2021 Abstract Tackling the problem of emissions is at the forefront of scientific research today. While industrial engines designed to operate in stable regimes produce emissions, attempts to operate them at "greener" conditions often fail due to thermoacoustic instability.
Raghunathan Manikandan +5 more
openaire +4 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
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
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
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
Thermoacoustic instability - a dynamical system and time domain analysis
, 2014 This study focuses on the Rijke tube problem, which includes features relevant to the modeling of thermoacoustic coupling in reactive flows: a compact acoustic source, an empirical model for the heat source, and nonlinearities.
Chenadec, Vincent Le +4 more
core +3 more sources