Strict pollutant emission regulations are pushing gas turbine manufacturers to develop devices that operate in lean conditions, with the downside that combustion instabilities are more likely to occur. Methods to predict and control unstable modes inside combustion chambers have been developed in the last decades but, in some cases, they are computationally expensive. Sensitivity analysis aided by adjoint methods provides valuable sensitivity information at a low computational cost. This paper introduces adjoint methods and their application in wave-based low order network models, which are used as industrial tools, to predict and control thermoacoustic oscillations. Two thermoacoustic models of interest are analyzed. First, in the zero Mac...
This paper presents the linear theory of adjoint equations as applied to thermo-acoustics. The purpo...
Thermoacoustic instabilities are one of the most challenging problems faced by gas turbine and rocke...
Hydrodynamic oscillations in gas turbine fuel injectors help to mix the fuel and air but can also co...
Strict pollutant emission regulations are pushing gas turbine manufacturers to develop devices that ...
Lean combustion technologies in gas turbines reduce the generation of NOx but increase the susceptib...
In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple with ac...
In gas turbines, thermoacoustic oscillations grow if moments of high fluctuating heat release rate c...
We construct a low-order thermoacoustic network model that contains the most influential physical me...
Gas turbines and rocket engines sometimes suffer from violent oscillations caused by feedback betwee...
In this paper, we de ne a mathematically consistent set of thermo-acoustic equations via asymptotic ...
Nine decades of rocket engine and gas turbine development have shown that thermoacoustic oscillation...
We present an adjoint-based method for the calculation of eigenvalue perturbations in nonlinear, deg...
© 2018 by ASME. Thermoacoustic instabilities are a major threat for modern gas turbines. Frequency-d...
In this thesis, low-order nonlinear models for the prediction of the nonlinear behaviour of thermoac...
Thermoacoustic instabilities are a major threat for modern gas turbines. Frequency-domain based stab...
This paper presents the linear theory of adjoint equations as applied to thermo-acoustics. The purpo...
Thermoacoustic instabilities are one of the most challenging problems faced by gas turbine and rocke...
Hydrodynamic oscillations in gas turbine fuel injectors help to mix the fuel and air but can also co...
Strict pollutant emission regulations are pushing gas turbine manufacturers to develop devices that ...
Lean combustion technologies in gas turbines reduce the generation of NOx but increase the susceptib...
In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple with ac...
In gas turbines, thermoacoustic oscillations grow if moments of high fluctuating heat release rate c...
We construct a low-order thermoacoustic network model that contains the most influential physical me...
Gas turbines and rocket engines sometimes suffer from violent oscillations caused by feedback betwee...
In this paper, we de ne a mathematically consistent set of thermo-acoustic equations via asymptotic ...
Nine decades of rocket engine and gas turbine development have shown that thermoacoustic oscillation...
We present an adjoint-based method for the calculation of eigenvalue perturbations in nonlinear, deg...
© 2018 by ASME. Thermoacoustic instabilities are a major threat for modern gas turbines. Frequency-d...
In this thesis, low-order nonlinear models for the prediction of the nonlinear behaviour of thermoac...
Thermoacoustic instabilities are a major threat for modern gas turbines. Frequency-domain based stab...
This paper presents the linear theory of adjoint equations as applied to thermo-acoustics. The purpo...
Thermoacoustic instabilities are one of the most challenging problems faced by gas turbine and rocke...
Hydrodynamic oscillations in gas turbine fuel injectors help to mix the fuel and air but can also co...