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Design of a pump-turbine using a quasi-potential flow approach, mathematical optimization and CFD

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, , Citation F Pochylý et al 2019 IOP Conf. Ser.: Earth Environ. Sci. 240 072043 DOI 10.1088/1755-1315/240/7/072043

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stefan@fme.vutbr.cz

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1 V. Kaplan Department of Fluid Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 61699 Brno, Czech Republic

2 ČKD Blansko Engineering, a.s., Čapkova 2357/5, 678 01 Blansko, Czech Republic

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1755-1315/240/7/072043

Abstract

Design of a pump turbine (ns = 135) is carried out using a very fast quasi-potential flow approach for the preliminary design. Theory behind this novel method is presented and its advantages discussed. Further finetuning is performed by coupling of CFD (ANSYS CFX) and particle swarm optimization method. The final design features suppression of the vortex rope over relatively wide turbine operating range. Simulations are verified by model testing in hydraulic laboratory.

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10.1088/1755-1315/240/7/072043