A Solar fuel injector that provides lean premixed combustion conditions has been studied in a combined experimental and numerical investigation. Lean premixed conditions can be accompanied by excessive combustion driven pressure oscillations which must be eliminated before the release of a final combustor design. In order to eliminate the pressure oscillations the location of fuel injection was parametrically evaluated to determine a stable configuration. It was observed that small axial changes in the position of the fuel spokes within the premix duct of the fuel injector had a significant positive effect on decoupling the excitation of the natural acoustic modes of the combustion system. In order to further understand the phenomenon, a time-accurate 2D CFD analysis was performed. 2D analysis was first calibrated using 3D steady-state CFD computations of the premixer in order to model the radial distribution of velocities in the premixer caused by non-uniform inlet conditions and swirling flow. 2D time-accurate calculations were then performed on the baseline configuration. The calculations captured the coupling of heat release with the combustor acoustics, which resulted in excessive pressure oscillations. When the axial location of the fuel injection was moved, the CFD analysis accurately captured the fuel time lag to the flame-front, and qualitatively matched the experimental findings. [S0742-4795(00)01103-0]
Skip Nav Destination
Article navigation
July 2000
Technical Papers
Passive Control of Combustion Instability in Lean Premixed Combustors
Robert C. Steele,
Robert C. Steele
Solar Turbines Inc., San Diego, CA 92186-5376
Search for other works by this author on:
Luke H. Cowell,
Luke H. Cowell
Solar Turbines Inc., San Diego, CA 92186-5376
Search for other works by this author on:
Steven M. Cannon,
Steven M. Cannon
CFD Research Corporation, Huntsville, AL 35805
Search for other works by this author on:
Clifford E. Smith
Clifford E. Smith
CFD Research Corporation, Huntsville, AL 35805
Search for other works by this author on:
Robert C. Steele
Solar Turbines Inc., San Diego, CA 92186-5376
Luke H. Cowell
Solar Turbines Inc., San Diego, CA 92186-5376
Steven M. Cannon
CFD Research Corporation, Huntsville, AL 35805
Clifford E. Smith
CFD Research Corporation, Huntsville, AL 35805
Contributed by the International Gas Turbine Institute (IGTI) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Paper presented at the International Gas Turbine and Aeroengine Congress and Exhibition, Indianapolis, IN, June 7–10, 1999; ASME Paper 99-GT-52. Manuscript received by IGTI March 9, 1999; final revision received by the ASME Headquarters May 15, 2000. Associate Technical Editor: D. Wisler.
J. Eng. Gas Turbines Power. Jul 2000, 122(3): 412-419 (8 pages)
Published Online: May 15, 2000
Article history
Received:
March 9, 1999
Revised:
May 15, 2000
Citation
Steele , R. C., Cowell, L. H., Cannon , S. M., and Smith, C. E. (May 15, 2000). "Passive Control of Combustion Instability in Lean Premixed Combustors ." ASME. J. Eng. Gas Turbines Power. July 2000; 122(3): 412–419. https://doi.org/10.1115/1.1287166
Download citation file:
Get Email Alerts
Image-based flashback detection in a hydrogen-fired gas turbine using a convolutional autoencoder
J. Eng. Gas Turbines Power
Fuel Thermal Management and Injector Part Design for LPBF Manufacturing
J. Eng. Gas Turbines Power
An investigation of a multi-injector, premix/micromix burner burning pure methane to pure hydrogen
J. Eng. Gas Turbines Power
Related Articles
Acoustic Resonances of an Industrial Gas Turbine Combustion System
J. Eng. Gas Turbines Power (October,2001)
Sub-Scale Demonstration of the Active Feedback Control of Gas-Turbine Combustion Instabilities
J. Eng. Gas Turbines Power (April,2000)
Effect of Fuel System Impedance Mismatch on Combustion Dynamics
J. Eng. Gas Turbines Power (January,2008)
Combustion Instabilities and Control of a Multiswirl Atmospheric Combustor
J. Eng. Gas Turbines Power (January,2007)
Related Chapters
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential
Combustion Under Harmonically Oscillating Pressure
Theory of Solid-Propellant Nonsteady Combustion