Transverse combustion instabilities: Acoustic, fluid mechanic, and flame processes
Thermoacoustic oscillations associated with transverse acoustic modes are routinely
encountered in combustion chambers. While a large literature on this topic exists for rockets …
encountered in combustion chambers. While a large literature on this topic exists for rockets …
The suitability of different swirl number definitions for describing swirl flows: Accurate, common and (over-) simplified formulations
Swirling flows are of considerable practical importance. They are used for example to
increase heat transfer in pipes or to stabilize flames at a distance from the injector unit by …
increase heat transfer in pipes or to stabilize flames at a distance from the injector unit by …
Dynamics of swirling flames
In many continuous combustion processes, such as those found in aeroengines or gas
turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The …
turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The …
Formation and flame-induced suppression of the precessing vortex core in a swirl combustor: experiments and linear stability analysis
K Oberleithner, M Stöhr, SH Im, CM Arndt… - Combustion and …, 2015 - Elsevier
The precessing vortex core (PVC) is a coherent flow structure that is often encountered in
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …
swirling flows in gas turbine (GT) combustors. In some swirl combustors, it has been …
The blow-off and transient characteristics of co-firing ammonia/methane fuels in a swirl combustor
Recent studies have demonstrated that ammonia could be one of the most promising
hydrogen carrier candidates which can be used in large-scale power plants. However, it is …
hydrogen carrier candidates which can be used in large-scale power plants. However, it is …
Understanding the role of flow dynamics in thermoacoustic combustion instability
J O'Connor - Proceedings of the Combustion Institute, 2023 - Elsevier
Thermoacoustic combustion instability is one of the most challenging operational issues in
several high-performance, low-emissions combustion technologies, including gas turbines …
several high-performance, low-emissions combustion technologies, including gas turbines …
Flame macrostructures, combustion instability and extinction strain scaling in swirl-stabilized premixed CH4/H2 combustion
In this paper, we report results from an experimental investigation on transitions in the
average flame shape (or microstructure) under acoustically coupled and uncoupled …
average flame shape (or microstructure) under acoustically coupled and uncoupled …
Effect of hydrogen enrichment on the dynamics of a lean technically premixed elevated pressure flame
The heat release distribution, combustion instability characteristics and flow dynamics of
lean swirl-stabilized flames of hydrogen enriched natural gas were studied using time …
lean swirl-stabilized flames of hydrogen enriched natural gas were studied using time …
A review of aircraft subsonic and supersonic combustors
Combustion is an essential process for generating propulsion for most existing aircraft. The
combustion processes, such as ignition, flame propagation, and flame stability, are …
combustion processes, such as ignition, flame propagation, and flame stability, are …
Flame dynamics of a variable swirl number system and instability control
Swirling flame dynamics is investigated using a radial swirler equipped with movable
blades. This device allows to continuously change the swirl number and to examine various …
blades. This device allows to continuously change the swirl number and to examine various …