Flow structure of lifted swirling jet flames

• Published in: Flow, turbulence and combustion Vol. 73; no. 1; pp. 25 - 47
• Main Authors: VANOVERBERGHE, K, VAN DEN BULCK, E, TUMMERS, M
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 01-07-2004
• Subjects: Applied sciences; Combustion of gaseous fuels; Combustion. Flame; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fluid dynamics; Fundamental areas of phenomenology (including applications); Physics; Theoretical studies. Data and constants. Metering; Turbulence simulation and modeling; Turbulent flows, convection, and heat transfer; Modal analysis; Small scale; Speed measurement; Premixed flame; Combustion; Experimental study; Flow field; Modeling; Mixing layer; Doppler laser anemometer; Probability density function; Natural gas; Turbulence structure
• ISSN: 1386-6184; 1573-1987
• DOI: 10.1023/B:APPL.0000044298.57545.4a

Swirling combustion is widely applied in various applications such as gas turbines, utility boilersor waste incinerators. This article contributes to the ongoing research by providing experimentaldata that are gathered in the mixing zone of a lifted swirling premixed natural gas flame. Theobjective of this paper is fivefold: (1) to introduce the lifted swirling flame featuring lowNO x emissions (2) to provide experimental data such as major species distributions, temperature and streamlines of the flow pattern, (3) to report on velocity bias in probability density function (PDF) distributions and to present PDF sequences of velocities in medium scale swirling flows, (4) to make an assessment on the local small-scale turbulence that is present in the swirling mixinglayer and (5) to provide new experimental data for model verification and development.