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