The thermoacoustic oscillation of a turbulent, swirl-stabilized, partially premixed flame in the
PRECCINSTA gas turbine model combustor is analyzed by means of a Scale Adaptive …

We present a k-exact reconstruction method, which can be incorporated into vertex-centered
unstructured finite-volume flow solvers to maintain a high-order accurate solution in space …

The acceleration of entropy waves in the turbine stages of aero-engines and gas turbines
produces sound, which can contribute to the feedback mechanism of thermoacoustic …

We investigate the low frequency transfer functions for acoustic and entropic perturbations
through nozzles and nozzle guide vanes. Previous theories rely on the isentropic …

Sound waves in a combustor are generated from fluctuations in the heat release rate (direct
noise) or the acceleration of entropy, vorticity or compositional perturbations through nozzles …

The generation of a temperature disturbance in a flow is accompanied by the production of
acoustic waves (direct noise) and of an entropy perturbation. If this entropy perturbation is …

Achieving clean and quiet combustion in gas turbines is essential for improving many low-
carbon energy and propulsion technologies. This often requires suppression of combustion …

Entropy (temperature) fluctuations produced by turbulent flames generate noise when they
are accelerated by the flow. This so-called entropy noise is an important contributor to core …

Entropy noise corresponds to acoustic fluctuations generated inside gas-turbine engines
when temperature (entropy) spots are accelerated by the mean flow. This type of noise …

Combustion of hydrogen or hydrogen containing blends in gas turbines and industrial
combustors can activate thermoacoustic combustion instabilities. Convective instabilities are …