Entropy noise: A review of theory, progress and challenges
Combustion noise comprises two components: direct combustion noise and indirect
combustion noise. The latter is the lesser studied, with entropy noise believed to be its main …
combustion noise. The latter is the lesser studied, with entropy noise believed to be its main …
Combustion and engine-core noise
M Ihme - Annual Review of Fluid Mechanics, 2017 - annualreviews.org
The implementation of advanced low-emission aircraft engine technologies and the
reduction of noise from airframe, fan, and jet exhaust have made noise contributions from an …
reduction of noise from airframe, fan, and jet exhaust have made noise contributions from an …
[HTML][HTML] Combustion noise
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 …
[HTML][HTML] A pore-scale assessment of the dynamic response of forced convection in porous media to inlet flow modulations
An increasing number of technologies require prediction of unsteady forced convection in
porous media when the inlet flow is unsteady. To gain further insight into this problem, the …
porous media when the inlet flow is unsteady. To gain further insight into this problem, the …
[HTML][HTML] On the unsteady forced convection in porous media subject to inlet flow disturbances-A pore-scale analysis
Heat convection response of a porous medium to the harmonic disturbances in the inlet flow
is investigated in a configuration consisting of several obstacles. Navier Stokes and energy …
is investigated in a configuration consisting of several obstacles. Navier Stokes and energy …
Solution of the quasi-one-dimensional linearized Euler equations using flow invariants and the Magnus expansion
The acoustic and entropy transfer functions of quasi-one-dimensional nozzles are studied
analytically for both subsonic and choked flows with and without shock waves. The present …
analytically for both subsonic and choked flows with and without shock waves. The present …
Mixed acoustic–entropy combustion instabilities in gas turbines
A combustion instability in a combustor terminated by a nozzle is analysed and modelled
based on a low-order Helmholtz solver. A large eddy simulation (LES) of the corresponding …
based on a low-order Helmholtz solver. A large eddy simulation (LES) of the corresponding …
The dissipation and shear dispersion of entropy waves in combustor thermoacoustics
AS Morgans, CS Goh, JA Dahan - Journal of Fluid Mechanics, 2013 - cambridge.org
This paper considers the effect of flow advection on entropy waves. The interest is in
whether entropy waves persist in gas turbine combustors, between the flame, where they …
whether entropy waves persist in gas turbine combustors, between the flame, where they …
Compositional inhomogeneities as a source of indirect combustion noise
The generation of indirect combustion noise by compositional inhomogeneities is examined
theoretically. For this, the compact-nozzle theory of Marble & Candel (J. Sound Vib., vol. 55 …
theoretically. For this, the compact-nozzle theory of Marble & Candel (J. Sound Vib., vol. 55 …
Prediction of material removal rate for chemical mechanical planarization using decision tree-based ensemble learning
Chemical mechanical planarization (CMP) has been widely used in the semiconductor
industry to create planar surfaces with a combination of chemical and mechanical forces. A …
industry to create planar surfaces with a combination of chemical and mechanical forces. A …