Results 31 to 40 of about 27,111 (282)
Regarding the evaluation of the solid rocket propellant response function to pressure coupling [PDF]
INCAS Bulletin, 2011 High frequency combustion instabilities imply a major risk for the solid rocket motor stableworking and they are directly linked to the propellant response to chamber pressure coupling.
Ioan ION, Titica VASILE, Doru SAFTA
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Thermokinetic Instabilities for Ammonia-hydrogen Mixtures in a Jet Stirred Flow Reactor
Chemical Engineering Transactions, 2021 The oxidation of ammonia and the interaction between ammonia and hydrogen chemistry have been extensively studied at high temperatures for traditional fames, while no experimental evidences have been provided for conditions relevant to MILD (Moderate or ...
Maria Virginia Manna +3 more
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Combustion instability mitigation by magnetic fields [PDF]
Physical Review E, 2017 The present interdisciplinary study combines electromagnetics and combustion to unveil an original and basic experiment displaying a spontaneous flame instability that is mitigated as the non-premixed sooting flame experiences a magnetic perturbation.
Jocher, Agnes +4 more
openaire +3 more sources
Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers [PDF]
, 2012 The objectives of this paper are the description of azimuthal instability modes found in annular combus- tion chambers using two numerical tools: (1) Large Eddy Simulation (LES) methods and (2) acoustic solv- ers.
Gicquel, Laurent Y.M. +4 more
core +4 more sources
Forcing Pulsations by Means of a Siren for Gas Turbine Applications
International Journal of Turbomachinery, Propulsion and Power, 2020 A siren is a robust fast-valve that generates effective flow pulsations and powerful noise levels under well-controlled conditions. It operates under the inlet flow conditions of a gas turbine combustor.
Fabrice Giuliani +3 more
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Aerospace, 2021 In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor.
Yuze Sun, Dan Zhao, Xiaowei Zhu
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A Review on Combustion Instability of Hydrogen-Enriched Marine Gas Turbines
Journal of Marine Science and EngineeringHydrogen is widely regarded as a promising carbon-free alternative fuel. However, the development of low-emission marine gas turbine combustion systems has been hindered by the associated risks of combustion instability, also termed as thermoacoustic ...
Jiaying Cheng +4 more
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Reduced-order modeling and dynamics of nonlinear acoustic waves in a combustion chamber [PDF]
, 2005 For understanding the fundamental properties of unsteady motions in combustion chambers, and for applications of active feedback control, reduced-order models occupy a uniquely important position. A framework exists for transforming the representation of
Ananthkrishnan, N. +2 more
core +1 more source
Acta Acustica, 2022 Combustion instability caused by the amplification of sound waves is called acoustic or high-frequency instability, which can cause severe damage to the system. Adding baffles is one of the methods of passive instability control.
Salarvand Hamid +3 more
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Numerical Steady and Transient Evaluation of a Confined Swirl Stabilized Burner
International Journal of Turbomachinery, Propulsion and Power, 2021 Lean premixed combustion technology became state of the art in recent heavy-duty gas turbines and aeroengines. In combustion chambers operating under fuel-lean conditions, unsteady heat release can augment pressure amplitudes, resulting in component ...
Federica Farisco +3 more
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