New designs of gas turbine combustors for power generation applications have to meet ever-tightening emission standards (mainly NOx, CO and UHC) while operating at high combustor pressures. This requires a detailed understanding of the physical processes involved. The air-fuel mixture preparation is a critical step in most advanced gas turbine combustion strategies to achieve lower emissions. It has long been established that the level of unmixedness between the fuel and air is strongly tied with NOx levels. The present paper applies the statistical technique of Design Of Experiments (DOE) to a generic mixer set-up that includes an axial swirler, with fuel injected at discrete locations and transverse to the flow. The objective is to identify influential design and operating parameters that will provide rapid and enhanced mixing. The parameters tested include Swirl strength as measured by the Swirl number, Swirl type (Constant angle vs. Free vortex), number and momentum of fuel injection sites and gas temperature. Planar Laser Induced Fluorescence of acetone (PLIF) was used to quantify mixing at various planar locations in the mixing section. Commercial CFD software is used to model the flow field and predict the spatial mixing at selected conditions. Comparisons are made with experimental measurements with the aim to validate the CFD code and also on comparing the model results with the measurements.
Skip Nav Destination
Close
Sign In or Register for Account
2002 International Joint Power Generation Conference
June 24–26, 2002
Scottsdale, Arizona, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-3617-7
PROCEEDINGS PAPER
Parametric Study to Optimize Air/Fuel Mixing for Lean, Premix Combustion Systems
Ibrahim Yimer
,
Ibrahim Yimer
National Research Council, Ottawa, ON, Canada
Search for other works by this author on:
Ian Campbell
Ian Campbell
National Research Council, Ottawa, ON, Canada
Search for other works by this author on:
Ibrahim Yimer
National Research Council, Ottawa, ON, Canada
Ian Campbell
National Research Council, Ottawa, ON, Canada
Paper No:
IJPGC2002-26086, pp. 709-715; 7 pages
Published Online:
February 24, 2009
Citation
Yimer, I, & Campbell, I. "Parametric Study to Optimize Air/Fuel Mixing for Lean, Premix Combustion Systems." Proceedings of the 2002 International Joint Power Generation Conference. 2002 International Joint Power Generation Conference. Scottsdale, Arizona, USA. June 24–26, 2002. pp. 709-715. ASME. https://doi.org/10.1115/IJPGC2002-26086
Download citation file:
- Ris (Zotero)
- Reference Manager
- EasyBib
- Bookends
- Mendeley
- Papers
- EndNote
- RefWorks
- BibTex
- ProCite
- Medlars
Close
Sign In
30
Views
0
Citations
Related Proceedings Papers
Related Articles
Analysis of NO X Formation in an Axially Staged Combustion System at Elevated Pressure Conditions
J. Eng. Gas Turbines Power (March,2012)
FLOX ® Combustion at High Pressure With Different Fuel Compositions
J. Eng. Gas Turbines Power (January,2008)
Status of Catalytic Combustion R&D for the Department of Energy Advanced Turbine Systems Program
J. Eng. Gas Turbines Power (April,2000)
Related Chapters
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Physiology of Human Power Generation
Design of Human Powered Vehicles