Future combustors designed for better efficiency and lower pollutant emission are expected
to operate closer to their stability boundary, thereby increasing the risk of encountering …

Acoustic instabilities in combustion chambers have been a significant problem in the design
of propulsion systems. Acoustic instabilities are generated by the feedback coupling …

CONDITIONS of high energy densities and low losses in com-bustion chambers encourage
the excitation and sustenance of organized unsteady motions generically called combustion …

The behavior of unstable rocket combustors is nonlinear. Although considerable effort has
been expended and significant progress has been made toward addressing the issue of …

The interactions between acoustic waves and a premixed combustion process can play an
important role in the characteristic unsteadiness of combustion devices. In particular, they …

View Video Presentation: https://doi. org/10.2514/6.2022-1857. vid Interestingly, otherwise
linear stable systems can become unstable under some conditions due to oscillations of …

Self-excited oscillations of a confined flame, burning in the wake of a bluff body flame holder,
are considered. These oscillations occur due to interaction between unsteady combustion …

ABSTRACT A simplified one-dimensional model of reactive flow is presented which
captures features of aeropropulsion systems, including acoustically driven combustion …

Combined experimental and computational studies of acoustic modes and combustion
instabilities in a longitudinal chamber configuration are presented. The experiments utilize a …

For understanding the fundamental properties of unsteady motions in combustion chambers,
and for applications of active feedback control, reduced-order models occupy a uniquely …