Actual operating conditions in the hot section of a gas turbine vary from the design condition due to factors such as geographic location, component wear, and fuel composition. Turbine design practices typically use a conservative approach that requires checking the sensitivity of operating parameters such as turbine inlet profiles, cooling flows, and heat transfer correlations on component temperatures and stresses. In most cases, a sensitivity check is limited to analyzing the bounds of a range of values for only a few input parameters, whereby the inputs that produce the most conservative results are carried through the remainder of the analysis. For flow path components, however, multiple inputs must be evaluated over a range of values due to the interaction of the hot gas flow field and internal cooling systems. The study presented in this paper uses a probabilistic approach to develop surrogate models to evaluate the sensitivity of a set of operating parameters on the predicted blade temperatures and stresses. Commercially available software is utilized to predict blade temperatures and stresses for the first two stages of an industrial gas turbine. The operating parameters define the blade cooling flow and the shape and values of the turbine inlet profiles of total temperature and total pressure. The results of the study show the spatially resolved sensitivity of the operating parameters on blade temperature and stress distributions.
Skip Nav Destination
ASME Turbo Expo 2012: Turbine Technical Conference and Exposition
June 11–15, 2012
Copenhagen, Denmark
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4474-8
PROCEEDINGS PAPER
Gas Turbine Blade Stress and Temperature Sensitivity to Turbine Inlet Profile and Cooling Flow
Beom Soo Kim,
Beom Soo Kim
Korea Electric Power Research Institute, Daejeon, South Korea
Search for other works by this author on:
Bum Shin Kim,
Bum Shin Kim
Korea Electric Power Research Institute, Daejeon, South Korea
Search for other works by this author on:
Woosung Choi,
Woosung Choi
Korea Electric Power Research Institute, Daejeon, South Korea
Search for other works by this author on:
Grant O. Musgrove,
Grant O. Musgrove
Southwest Research Institute, San Antonio, TX
Search for other works by this author on:
John McFarland,
John McFarland
Southwest Research Institute, San Antonio, TX
Search for other works by this author on:
Frank Fierro,
Frank Fierro
Southwest Research Institute, San Antonio, TX
Search for other works by this author on:
David L. Ransom
David L. Ransom
Southwest Research Institute, San Antonio, TX
Search for other works by this author on:
Beom Soo Kim
Korea Electric Power Research Institute, Daejeon, South Korea
Bum Shin Kim
Korea Electric Power Research Institute, Daejeon, South Korea
Woosung Choi
Korea Electric Power Research Institute, Daejeon, South Korea
Grant O. Musgrove
Southwest Research Institute, San Antonio, TX
John McFarland
Southwest Research Institute, San Antonio, TX
Frank Fierro
Southwest Research Institute, San Antonio, TX
David L. Ransom
Southwest Research Institute, San Antonio, TX
Paper No:
GT2012-69603, pp. 2273-2284; 12 pages
Published Online:
July 9, 2013
Citation
Kim, BS, Kim, BS, Choi, W, Musgrove, GO, McFarland, J, Fierro, F, & Ransom, DL. "Gas Turbine Blade Stress and Temperature Sensitivity to Turbine Inlet Profile and Cooling Flow." Proceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 8: Turbomachinery, Parts A, B, and C. Copenhagen, Denmark. June 11–15, 2012. pp. 2273-2284. ASME. https://doi.org/10.1115/GT2012-69603
Download citation file:
38
Views
Related Proceedings Papers
Related Articles
Simulation of Cooling Systems in Gas Turbines
J. Turbomach (April,1996)
A Novel Technique for Assessing Turbine Cooling System Performance
J. Turbomach (July,2011)
Effects of a Reacting Cross-Stream on Turbine Film Cooling
J. Eng. Gas Turbines Power (May,2010)
Related Chapters
Control and Operational Performance
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
Outlook
Closed-Cycle Gas Turbines: Operating Experience and Future Potential