Thermoacoustic combustion instability is one of the most challenging operational issues in
several high-performance, low-emissions combustion technologies, including gas turbines …

The precessing vortex core (PVC) is a helically shaped coherent flow structure that occurs in
reacting and nonreacting swirling flows undergoing vortex breakdown. In swirl-stabilized …

In this study, we apply periodic flow excitation of the precessing vortex core at the
centerbody of a swirl-stabilized combustor to investigate the impact of the precessing vortex …

Rayleigh index is a critical parameter to quantify the mechanism that leads to
thermoacoustic instabilities. However, due to the limitations of measuring instruments and …

This study introduces the Extended Cluster-based Network Modeling (eCNM), a
methodology to analyze complex fluid flows. The eCNM focuses on characterizing dynamics …

The precessing vortex core (PVC) represents a helical-shaped coherent flow structure
typically occurring in both reacting and nonreacting swirling flows. Until now, the …

Heat transfer characteristics of the swirling impinging jet-arrays issued from the nozzle
plates without and with the# and※ patterned grooves were comparatively studied. Each …

This thesis provides an experimental and theoretical investigation of turbulent swirling jets
with the emphasis on the formation of large-scale coherent flow structures. The involved …

Fluidic actuators are designed to control the oscillatory helical mode, called a precessing
vortex core (PVC), which is often observed in gas turbine combustors. The PVC induces …

An innovative type of heat exchanger with heat transfer benefits from jet impingements is
proposed. The increase of surface area to volume ratio for the heat exchanger requires the …