The role of the centerbody wake on the precessing vortex core dynamics of a swirl nozzle
A Mukherjee, N Muthichur… - … for Gas Turbines …, 2021 - asmedigitalcollection.asme.org
The precessing vortex core (PVC) phenomenon in swirling jets is a helical instability in the
flow driven by the coherent precession of the vortex breakdown bubble (VBB) around the …
flow driven by the coherent precession of the vortex breakdown bubble (VBB) around the …
Mean field coupling mechanisms explaining the impact of the precessing vortex core on the flame transfer function
The flame transfer functions (FTF) is a key quantity to assess the thermoacoustic properties
of combustion systems. It is known to depend on the hydrodynamic instabilities of the …
of combustion systems. It is known to depend on the hydrodynamic instabilities of the …
Impact of a centerbody on the unsteady flow dynamics of a swirl nozzle: Intermittency of precessing vortex core oscillations
S Gupta, S Shanbhogue… - … for Gas Turbines …, 2022 - asmedigitalcollection.asme.org
The precessing vortex core (PVC) is a self-excited flow oscillation state occurring in swirl
nozzles. This is caused by the presence of a marginally unstable hydrodynamic helical …
nozzles. This is caused by the presence of a marginally unstable hydrodynamic helical …
Impact of Hydrogen Addition on the Thermoacoustic Instability and Precessing Vortex Core Dynamics in a CH4/H2/Air Technically Premixed Combustor
We study the impact of H 2 enrichment on the unsteady flow dynamics and thermoacoustic
instability in the prediction and control of instabilities in industrial turbines (PRECCINSTA) …
instability in the prediction and control of instabilities in industrial turbines (PRECCINSTA) …
Interacting Linear Modes in the Turbulent Flow of an Industrial Swirled Combustor
Swirled flows often feature global modes that become manifest as skew-symmetric helical
vortices, also known as precessing vortex cores, which dominate the flow dynamics. This …
vortices, also known as precessing vortex cores, which dominate the flow dynamics. This …
Interaction of multiple linear helical modes in the turbulent flow field of an industrial fuel injection system
View Video Presentation: https://doi. org/10.2514/6.2022-1061. vid Swirled flow fields often
feature global modes that manifest as skew-symmetric helical vortices, also known as …
feature global modes that manifest as skew-symmetric helical vortices, also known as …
Precessing Vortex Core Suppression in a Swirl Stabilized Combustor With Hydrogen Addition
Self-excited flow oscillations such as the precessing vortex core (PVC) in swirl nozzle
combustion systems can significantly impact combustor operation by impacting unsteady …
combustion systems can significantly impact combustor operation by impacting unsteady …
Suppression and intermittency of precessing vortex core oscillations in a swirl nozzle
View Video Presentation: https://doi. org/10.2514/6.2023-1061. vid The precessing vortex
core (PVC) is a self-excited flow oscillation in swirl nozzle combustors that can influence …
core (PVC) is a self-excited flow oscillation in swirl nozzle combustors that can influence …
Identification of wavemaker region in swirling flows using complex network analysis
Precessing vortex core oscillation (PVC) is a self-excited flow oscillation observed in
strongly swirled flows that show vortex breakdown. When these oscillations occur in …
strongly swirled flows that show vortex breakdown. When these oscillations occur in …
Modeling the transport of fuel mixture perturbations and entropy waves in the linearized framework
TL Kaiser, K Oberleithner - … of Engineering for …, 2021 - asmedigitalcollection.asme.org
In this paper, a new method is introduced to model the transport of entropy waves and
equivalence ratio fluctuations in turbulent flows. The model is based on the Navier–Stokes …
equivalence ratio fluctuations in turbulent flows. The model is based on the Navier–Stokes …