55 citations · 294 across the 19 of their papers we have counts for
6 papers · 1 filter
Stabilization of acoustic modes using Helmholtz and Quarter-Wave resonators tuned at exceptional points
Claire Bourquard, Nicolas Noiray
Acoustic dampers are efficient and cost-effective means for suppressing thermoacoustic instabilities in combustion chambers. However, their design and the choice of their purging a…
Bifurcation Dodge: Avoidance of a Thermoacoustic Instability under Transient Operation
Giacomo Bonciolini, Nicolas Noiray
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 r…
Combustion regimes in sequential combustors: Flame propagation and autoignition at elevated temperature and pressure
Oliver Schulz, Nicolas Noiray
This numerical study investigates the combustion modes in the second stage of a sequential combustor at atmospheric and high pressure. The sequential burner (SB) features a mixing…
Processing time-series of randomly forced self-oscillators: the example of beer bottle whistling
E. Boujo, C. Bourquard, Y. Xiong +1
We present a model-based, output-only parameter identification method for self-sustained oscillators forced by dynamic noise, which we illustrate experimentally with an aeroacousti…
Effect of wall thermal inertia upon transient thermoacoustic dynamics of a swirl-stabilized flame
Giacomo Bonciolini, Dominik Ebi, Ulrich Doll +2
This paper shows the importance of considering the thermal state of a combustor to investigate or predict its thermoacoustic stability. This aspect is often neglected or regarded a…
Experiments and modelling of rate-dependent transition delay in a stochastic subcritical bifurcation
Giacomo Bonciolini, Dominik Ebi, Edouard Boujo +1
Complex systems exhibiting critical transitions when one of their governing parameters varies are ubiquitous in nature and in engineering applications. Despite a vast literature fo…