The turbomachine industry is increasingly interested in developing automated design procedures that are able to summarize current design experience, to take into account manufacturing limitations and to define new rules for improving machine performance. In this paper, a strategy for the parametric analysis and optimization of transonic centrifugal impellers was developed, using the technique of the design of experiments coupled with a three dimensional fluid-dynamic solver. The geometrical parameterization was conducted using Bezier curves and a few geometrical parameters, which were chosen after a screening analysis in order to determine the most significant ones. The range of variation of the parameters was defined taking into account the manufacturing requirements. The analysis of the influence of such parameters on the main impeller performance was subdivided into two steps: first, the effect of the parameters acting on the blade shape was investigated and an optimum configuration was chosen, then the influence of three functional parameters was analyzed, fixing the already optimized variables. The whole strategy aimed at an industrial design approach, and attention was focused on the time required in the design process. From the present analysis it was possible not only to define an optimum geometry, but also to understand the influence of the input parameters on the main machine performance.
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October 2006
Technical Papers
Analysis and Optimization of Transonic Centrifugal Compressor Impellers Using the Design of Experiments Technique
Duccio Bonaiuti,
Duccio Bonaiuti
“Sergio Stecco” Department of Energy Engineering, University of Florence, 50139 Florence, Italy
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Andrea Arnone,
Andrea Arnone
“Sergio Stecco” Department of Energy Engineering, University of Florence, 50139 Florence, Italy
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Mirco Ermini,
Mirco Ermini
“Sergio Stecco” Department of Energy Engineering, University of Florence, 50139 Florence, Italy
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Leonardo Baldassarre
Leonardo Baldassarre
GE Nuovo Pignone, 50127 Florence, Italy
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Duccio Bonaiuti
“Sergio Stecco” Department of Energy Engineering, University of Florence, 50139 Florence, Italy
Andrea Arnone
“Sergio Stecco” Department of Energy Engineering, University of Florence, 50139 Florence, Italy
Mirco Ermini
“Sergio Stecco” Department of Energy Engineering, University of Florence, 50139 Florence, Italy
Leonardo Baldassarre
GE Nuovo Pignone, 50127 Florence, Italy
Contributed by the International Gas Turbine Institute of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received February 13, 2002; final manuscript received May 1, 2003. Paper No. 2002-GT-30619. Review Chair: E. Benvenuti.
J. Turbomach. Oct 2006, 128(4): 786-797 (12 pages)
Published Online: September 27, 2006
Article history
Received:
February 13, 2002
Revised:
May 1, 2003
Online:
September 27, 2006
Citation
Bonaiuti , D., Arnone , A., Ermini, M., and Baldassarre, L. (September 27, 2006). "Analysis and Optimization of Transonic Centrifugal Compressor Impellers Using the Design of Experiments Technique." ASME. J. Turbomach. October 2006; 128(4): 786–797. https://doi.org/10.1115/1.1579507
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