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

By A. Škerlavaj, M. Morgut, D. Jošt and E. Nobile

Abstract

In this study the impeller geometry of a double-suction pump ensuring the best \ud performances in terms of hydraulic efficiency and reluctance of cavitation is determined using \ud an optimization strategy\ud , which was driven by means of the modeFRONTIER optimization \ud platform. The different impeller shapes (designs) are modified according to the optimization \ud parameters and tested with a computational fluid dynamics (CFD) software, namely ANSYS \ud CFX. The simulations are performed using a decoupled approach, where only the impeller \ud domain region is numerically investigated for computational convenience. The flow losses in \ud the volute are estimated on the base of the velocity distribution at the impeller outlet. The best \ud designs are then validated considering the computationally more expensive full geometry CFD \ud model. The overall results show that the proposed approach is suitable for quick impeller shape \ud optimization

Topics: Physics and Astronomy (all)
Year: 2017
DOI identifier: 10.1088/1742-6596
OAI identifier: oai:arts.units.it:11368/2901435

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