This paper describes recent work at Cardiff to gain further understanding of the fundamental
processes occurring in swirl burners. The phenomenon of the precessing vortex core has …

The flow patterns produced in and past the exhaust of a 100-KW swirl burner have been
investigated experimentally under piloted premixed combustion conditions. The well-known …

This paper reviews the occurrence of the precessing vortex core (PVC) and other
instabilities, which occur in, swirl combustion systems whilst identifying mechanisms, which …

This paper examines the fundamental characteristics of a 2 MW swirl burner/furnace system
and in particular the excitation of the Precessing Vortex Core (PVC) in diffusion controlled …

Methods have been developed to represent the rotating temperature fields associated with a
three-dimensional, time-dependent coherent structure, the precessing vortex core (PVC) …

'Fuel-flexible'gas turbines will be required over the next 20 years at least. However, this
contrasts with recent experiences of global operators who report increasing emissions and …

Acoustic techniques, high speed filming and LDA were employed to characterize swirling jet
flow in a model vortex burner. The isothermal flow conditions studied correspond to Re …

SWIRL burners are now widely used in many industrial processes ranging from small
package boilers to large power station boilers. As shown in Fig. la, and providing the level of …

We report on experimental and analytical studies of strongly swirling air flow in the near-field
of a generic axisymmetric tangential swirler used often as swirl generator in combustors …

Two main types of flow pattern occur in certain types of swirl burner for various Reynolds
numbers, mixture ratios and axial fuel entry. They are as follows:(a) Flows which contain a …