Alvise Pellegrini and Ernesto Benini
MultiObjective Optimization of a Steam Turbine Stage
1514 - 1527
2013
7
7
International Journal of Mechanical and Mechatronics Engineering
https://publications.waset.org/pdf/16437
https://publications.waset.org/vol/79
World Academy of Science, Engineering and Technology
The design of a steam turbine is a very complex
engineering operation that can be simplified and improved thanks to
computeraided multiobjective optimization. This process makes use
of existing optimization algorithms and losses correlations to identify
those geometries that deliver the best balance of performance (i.e.
Paretooptimal points).
This paper deals with a onedimensional multiobjective and
multipoint optimization of a singlestage steam turbine. Using a
genetic optimization algorithm and an algebraic onedimensional
ideal gaspath model based on loss and deviation correlations, a code
capable of performing the optimization of a predefined steam turbine
stage was developed. More specifically, during this study the
parameters modified (i.e. decision variables) to identify the best
performing geometries were solidity and angles both for stator and
rotor cascades, while the objective functions to maximize were totalto
static efficiency and specific work done.
Finally, an accurate analysis of the obtained results was carried
out.
Open Science Index 79, 2013