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Authors: Nils Moser and Franz Joos

Affiliation: Helmut-Schmidt-University and University of the Federal Armed Forces Hamburg, Germany

Keyword(s): CFD, Control stage, Evolutionary algorithm, Guide vane, Optimization, Steam, Turbine.

Related Ontology Subjects/Areas/Topics: Artificial Intelligence ; Computational Intelligence ; Evolution Strategies ; Evolutionary Art and Design ; Evolutionary Computing ; Evolutionary Multiobjective Optimization ; Soft Computing

Abstract: The subject of this paper is the optimization of a guide vane of steam turbine control stage by end wall contouring. The investigated control stage is derived from an existing industrial steam turbine design. The end wall contour is varied in rotational direction within specified restrictions by an evolutionary algorithm. The algorithm is directly connected to a mesh generator and a Computational Fluid Dynamics (CFD) solver. The optimization goal is the reduction of the total pressure loss over the guide vane. The geometry of the rotor blade has been retained unchanged. The flow field of the varied stage is compared with the baseline geometry. The optimum candidates are further investigated with CFD simulations for different operating point scenarios. Numerical results show that the axisymetric end wall contouring of the nozzle has a considerable effect on the loss behavior of the nozzle over a wide range of pressure ratios. Due to end wall contouring the boundary layer in the nozzle is significantly affected which results in a significant reduction of the secondary flow effects in the guide vanes. (More)

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Paper citation in several formats:
Moser, N. and Joos, F. (2010). OPTIMIZATION OF A STEAM TURBINE GUIDE VANE BY END WALL CONTOURING USING EVOLUTIONARY ALGORITHMS. In Proceedings of the International Conference on Evolutionary Computation (IJCCI 2010) - ICEC; ISBN 978-989-8425-31-7, SciTePress, pages 327-331. DOI: 10.5220/0003074603270331

@conference{icec10,
author={Nils Moser. and Franz Joos.},
title={OPTIMIZATION OF A STEAM TURBINE GUIDE VANE BY END WALL CONTOURING USING EVOLUTIONARY ALGORITHMS},
booktitle={Proceedings of the International Conference on Evolutionary Computation (IJCCI 2010) - ICEC},
year={2010},
pages={327-331},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003074603270331},
isbn={978-989-8425-31-7},
}

TY - CONF

JO - Proceedings of the International Conference on Evolutionary Computation (IJCCI 2010) - ICEC
TI - OPTIMIZATION OF A STEAM TURBINE GUIDE VANE BY END WALL CONTOURING USING EVOLUTIONARY ALGORITHMS
SN - 978-989-8425-31-7
AU - Moser, N.
AU - Joos, F.
PY - 2010
SP - 327
EP - 331
DO - 10.5220/0003074603270331
PB - SciTePress

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