[HTML][HTML] Combustion noise
AP Dowling, Y Mahmoudi - Proceedings of the Combustion Institute, 2015 - Elsevier
Combustion noise is becoming increasingly important as a major noise source in
aeroengines and ground based gas turbines. This is partially because advances in design …
aeroengines and ground based gas turbines. This is partially because advances in design …
State prediction of an entropy wave advecting through a turbulent channel flow
L Christodoulou, N Karimi, A Cammarano… - Journal of Fluid …, 2020 - cambridge.org
Survival of entropy waves during their advection throughout a combustor is central to the
generation of entropic sound and the subsequent effects upon thermoacoustic stability of the …
generation of entropic sound and the subsequent effects upon thermoacoustic stability of the …
A nonlinear model for indirect combustion noise through a compact nozzle
M Huet, A Giauque - Journal of Fluid Mechanics, 2013 - cambridge.org
The present paper deals with the generation of sound by the passage of acoustic or entropy
perturbations through a nozzle in the nonlinear regime and in the low-frequency limit. The …
perturbations through a nozzle in the nonlinear regime and in the low-frequency limit. The …
Combining LES of combustion chamber and an actuator disk theory to predict combustion noise in a helicopter engine
A method to predict combustion noise in real aero-engines using Large Eddy Simulations
(LES) of the combustion chamber coupled with an analytical approach to model the acoustic …
(LES) of the combustion chamber coupled with an analytical approach to model the acoustic …
Simulation and modelling of the waves transmission and generation in a stator blade row in a combustion-noise framework
The combustion noise in aero-engines is known to have two different origins. First, the direct
combustion noise is directly generated by the flame itself. Second, the indirect combustion …
combustion noise is directly generated by the flame itself. Second, the indirect combustion …
Accounting for acoustic damping in a Helmholtz solver
Thermoacoustic Helmholtz solvers provide a cheap and efficient way of predicting
combustion instabilities. However, because they rely on the inviscid Euler equations at zero …
combustion instabilities. However, because they rely on the inviscid Euler equations at zero …
[HTML][HTML] On the response of a lean-premixed hydrogen combustor to acoustic and dissipative-dispersive entropy waves
Combustion of hydrogen or hydrogen containing blends in gas turbines and industrial
combustors can activate thermoacoustic combustion instabilities. Convective instabilities are …
combustors can activate thermoacoustic combustion instabilities. Convective instabilities are …
Research on airplanes engines dynamic processes with modern acoustic methods for fast and accurate diagnostics and safety improvement
The issues of monitoring the processes of combustion and fuel injection in a turbojet engine
of a multi-purpose aircraft in real conditions of its use with the use of selected characteristics …
of a multi-purpose aircraft in real conditions of its use with the use of selected characteristics …
Recent improvements in combustion noise investigation: from the combustion chamber to nozzle flow
For a long time, engine noise has been dominated by fan and jet noise. With their reduction
for modern turbojets, for instance, combustion noise is no longer negligible and efforts are …
for modern turbojets, for instance, combustion noise is no longer negligible and efforts are …
Numerical prediction of far-field combustion noise from aeronautical engines
A hybrid methodology combining a detailed Large Eddy Simulation of a combustion
chamber sector, an analytical propagation model of the extracted acoustic and entropy …
chamber sector, an analytical propagation model of the extracted acoustic and entropy …