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Studies of swirl burner characteristics, flame lengths and relative pressure amplitudes

Valera Medina, Agustin, Syred, Nicholas, Bowen, Philip John and Crayford, Andrew Philip 2011. Studies of swirl burner characteristics, flame lengths and relative pressure amplitudes. Journal of Fluids Engineering 133 (10) , 101302. 10.1115/1.4004908

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Abstract

Swirl stabilized combustion is a technology which, for stationary combustion, consumes more than 70 to 80% of the world's fossil fuels. There have been many reviews of this technology, but there are still many gaps in understanding. This paper focuses on the general characteristics of a 100kW swirl burner, originally designed for poor quality fuels, in terms of flame characteristic, length and pressure fluctuations, to give a relative measure of the propensity of the system to respond to outside perturbations. Studied effects include swirl number, symmetry of the swirl flow system, type of fuel injector and mode of fuel injection. A range of techniques, including High Speed Photography (HSP), Particle Image Velocimetry (PIV) and fluctuating pressure measurements were used to create flame maps, flame length detail, and relative pressure amplitudes graphs. The results are discussed in the context of potential oscillations and coupling mechanisms including the effect of the precessing vortex core (PVC), recirculation and shear flow instabilities.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords: chemically reactive flow, combustion, combustion equipment, flames, flow instability, flow visualisation, fluctuations, fluid oscillations, pressure measurement, shear flow, vortices
Publisher: American Society of Mechanical Engineers (ASME)
ISSN: 0098-2202
Last Modified: 05 Mar 2019 21:00
URI: http://orca.cf.ac.uk/id/eprint/17056

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