In this study, an optimization design method is established for a rotor blade of a Curtis turbine. Bezier curve is generally used to define the profile of turbine blades. However, this curve is not proper to a supersonic impulse turbine. Section shape of a supersonic turbine blade is composed of straight lines and circular arcs. That is, it has several constraints to define the section shape. Thus, in this study, a blade design method is developed by using B-spline curve in which local control is possible. The turbine blade section has been changed by varying three design parameters of exit blade angle, stagger angle and maximum camber. Then flow analyses have been carried out for the sections. Lift-drag ratio of the blade section is used as the object function, and it is maximized in the optimization. Second-order response surface model is employed to express the object function as a function of design parameters. Central composite design method is used to reduce the number of design points. Then, an evolution strategy is employed to obtain the optimized section of the Curtis turbine blade.
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ASME 2005 Fluids Engineering Division Summer Meeting
June 19–23, 2005
Houston, Texas, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4199-5
PROCEEDINGS PAPER
A Study of Optimization of Blade Section Shape for a Steam Turbine
Kyung-Nam Chung,
Kyung-Nam Chung
Hyundai Maritime Research Institute, Ulsan, Korea
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Yang-Ik Kim,
Yang-Ik Kim
Hyundai Maritime Research Institute, Ulsan, Korea
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Ju-Heon Sung,
Ju-Heon Sung
Hyundai Maritime Research Institute, Ulsan, Korea
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In-Ho Chung,
In-Ho Chung
Hyundai Maritime Research Institute, Ulsan, Korea
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Sang-Hoon Shin
Sang-Hoon Shin
Hyundai Maritime Research Institute, Ulsan, Korea
Search for other works by this author on:
Kyung-Nam Chung
Hyundai Maritime Research Institute, Ulsan, Korea
Yang-Ik Kim
Hyundai Maritime Research Institute, Ulsan, Korea
Ju-Heon Sung
Hyundai Maritime Research Institute, Ulsan, Korea
In-Ho Chung
Hyundai Maritime Research Institute, Ulsan, Korea
Sang-Hoon Shin
Hyundai Maritime Research Institute, Ulsan, Korea
Paper No:
FEDSM2005-77385, pp. 53-57; 5 pages
Published Online:
October 13, 2008
Citation
Chung, K, Kim, Y, Sung, J, Chung, I, & Shin, S. "A Study of Optimization of Blade Section Shape for a Steam Turbine." Proceedings of the ASME 2005 Fluids Engineering Division Summer Meeting. Volume 2: Fora. Houston, Texas, USA. June 19–23, 2005. pp. 53-57. ASME. https://doi.org/10.1115/FEDSM2005-77385
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