Decoupled CFD-based optimization of efficiency and cavitation performance of a double-suction pump

In this study the impeller geometry of a double-suction pump ensuring the best performances in terms of hydraulic efficiency and reluctance of cavitation is determined using an optimization strategy, which was driven by means of the modeFRONTIER optimization platform. The different impeller shapes (...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-04, Vol.813 (1), p.12048
Main Authors: Škerlavaj, A, Morgut, M, Jošt, D, Nobile, E
Format: Article
Language:English
Subjects:
CAD
Cavitation
Computational fluid dynamics
Computer aided design
Impellers
Mathematical models
Optimization
Parameter modification
Physics
Shape optimization
Suction
Velocity distribution
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Summary:In this study the impeller geometry of a double-suction pump ensuring the best performances in terms of hydraulic efficiency and reluctance of cavitation is determined using an optimization strategy, which was driven by means of the modeFRONTIER optimization platform. The different impeller shapes (designs) are modified according to the optimization parameters and tested with a computational fluid dynamics (CFD) software, namely ANSYS CFX. The simulations are performed using a decoupled approach, where only the impeller domain region is numerically investigated for computational convenience. The flow losses in the volute are estimated on the base of the velocity distribution at the impeller outlet. The best designs are then validated considering the computationally more expensive full geometry CFD model. The overall results show that the proposed approach is suitable for quick impeller shape optimization.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/813/1/012048