Results 41 to 50 of about 2,865 (193)
Experimental Investigation of Stochastically Forced Rijke-Type Supercritical Thermoacoustic Systems
Energies, 2023 Intense thermoacoustic oscillations may lead to severe deterioration due to the induced intolerable damage to combustors. A better understanding of unstable behaviors is important to prevent or suppress these oscillations.
Hao Zhang +4 more
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International Journal of Aerospace Engineering, 2020 We seek to ascertain and understand source terms that drive thermoacoustic instability and acoustic radiation. We present a new theory based on the decomposition of the Navier-Stokes equations coupled with the mass fraction equations.
S. A. E. Miller
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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
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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
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Applied Sciences, 2023 Self-excited thermoacoustic instability (SETAI) is an undesirable and dangerous phenomenon in combustion systems. However, its control is difficult, thus greatly limiting the development of combustion technology.
Yongbo Du +6 more
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Bifurcation Dodge: Avoidance of a Thermoacoustic Instability under Transient Operation
, 2018 Varying one of the governing parameters of a dynamical system may lead to a critical transition, where the new stable state is undesirable. In some cases, there is only a limited range of the bifurcation parameter that corresponds to that unwanted ...
Bonciolini, Giacomo, Noiray, Nicolas
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Thermoacoustic Instability in Combustors
Annual Review of Fluid MechanicsThermoacoustic instability is a flow instability that arises due to a two-way coupling between acoustic waves and unsteady heat release rate. It can cause damaging, large-amplitude oscillations in the combustors of gas turbines, aeroengines, rocket engines, etc., and the transition to decarbonized fuels is likely to introduce new thermoacoustic ...
Morgans, AS, Yang, D
openaire +2 more sources
Applied SciencesThe premixed combustion of a gas turbine is prone to thermoacoustic oscillation, which affects the safety of combustion systems. This study experimentally investigated the suppression mechanism of a stratified jet-in-crossflow on the thermoacoustic ...
Rongyue Sun, Chengfei Tao
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Limit-Cycle Properties of a Rijke Tube [PDF]
, 2003 Thermoacoustic instability appears when unsteady heat release is favourably coupled with acoustic pressure perturbations. The important technical applications involving thermoacoustics are combustion instability in rocket motors and low-pollutant lean ...
Culick, F. E. C., Matveev, K. I.
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