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TECHNICAL PAPERS: Gas Turbines: Combustion and Fuel

Vortex Generators in Lean-Premix Combustion

[+] Author and Article Information
A. Eroglu, K. Döbbeling

ABB Corporate Research Ltd., Baden-Dättwill, Switzerland

F. Joos, P. Brunner

ABB Power Generation Ltd., Baden, Switzerland

J. Eng. Gas Turbines Power 123(1), 41-49 (Oct 20, 1999) (9 pages) doi:10.1115/1.1335481 History: Received March 25, 1998; Revised October 20, 1999
Copyright © 2001 by ASME
Topics: Vortices , Generators , Fuels
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References

Figures

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The LIF pictures of fuel concentration at four successive stations downstream of a central lance without vortex generators
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The LIF pictures of fuel concentration in streamwise planes downstream of a central lance without vortex generators
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The geometry of a single vortex generator element
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Normalized axial velocity (U/U) distributions at five successive planes downstream of vortex generator version A
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Normalized axial velocity (U/U) distributions at five successive planes downstream of vortex generator version B
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Normalized axial velocity (U/U) distributions at five successive planes downstream of vortex generator version C
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Normalized axial velocity (U/U) distributions at five successive planes downstream of vortex generator version D
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Combustion system of GT24/GT26 gas turbines
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SEV combustor as viewed from the downstream end
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Injection geometry for the reference case without vortex generators
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Circulation values calculated from the velocity measurements at five successive planes as a function of length to width ratio of the vortex generator
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The pressure drop coefficient of a single and four vortex generators as the length to width ratio is varied
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The geometry of two opposing vortex generators with central injection
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The LIF pictures of fuel concentration over four successive planes downstream of a pair of opposing vortex generators with central injection
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The geometry of two pairs of opposing vortex generators with central injection
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The vortex pattern generated by two pairs of opposing vortex generators at the fuel injection plane
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The LIF pictures of fuel concentration over four successive planes downstream of two pairs of opposing vortex generators with central injection
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The LIF pictures of fuel concentration over streamwise planes downstream of two pairs of opposing vortex generators with central injection
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Variation coefficient (standard deviation to mean concentration ratio) as a function of axial distance

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