Numerical Simulation of Wear Resistance Performance of Guide Vanes in Mixed-flow Turbines

WANG Jingkun; YE Zisheng; WANG Ziyang; XIONG Jiahong

doi:10.7643/ issn.1672-9242.2026.01.016

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Equipment Environmental Engineering ›› 2026, Vol. 23 ›› Issue (1) : 137-144. DOI: 10.7643/ issn.1672-9242.2026.01.016

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Numerical Simulation of Wear Resistance Performance of Guide Vanes in Mixed-flow Turbines

WANG Jingkun¹, YE Zisheng¹, WANG Ziyang², XIONG Jiahong²

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Abstract

The work aims to improve the sediment wear resistance performance of hydro turbine guide vanes. A hydro turbine from a specific hydropower plant was taken as the research object. Based on the discrete phase model and the Oka erosion model, a numerical simulation method of sand-containing water flow and the wear of guide vanes in the full flow passage of the hydro turbine was proposed. Based on the full flow passage calculation results and the Oka erosion model, the wear prediction for different materials in the single flow passage guide vane basin was performed. The research results indicated that the Inconel-718 performed the best wear resistance in both fixed guide vanes and movable guide vanes. Its maximum wear rate was reduced by 55.7% and 39.5% respectively compared with ZG20Mn, the average wear rate increased by 29.8% and 30.7% respectively, which was superior to ZG06Cr13Ni4Mo (maximum wear rate reduced by 31.5% and 26.9%, average wear rate increased by 20.4% and 22%). When the sand content was 6.2 kg/m³ and the time for the wear depth to reach 8 mm was taken as the evaluation criterion, the service life of Inconel-718 was 4 353.9 hours, which was 72.7% higher than that of ZG20Mn and 27.1% higher than that of ZG06Cr13Ni4Mo. In this study, the wear amounts and wear lives of different materials of turbine guide vanes are calculated through numerical simulation methods, providing an effective calculation method and reference basis for the wear and material selection of guide vanes in hydropower and water conservancy projects.

Key words

mixed-flow turbine / guide vane / sediment erosion / numerical simulation / Oka erosion model / wear resistance performance

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WANG Jingkun, YE Zisheng, WANG Ziyang, XIONG Jiahong. Numerical Simulation of Wear Resistance Performance of Guide Vanes in Mixed-flow Turbines[J]. Equipment Environmental Engineering. 2026, 23(1): 137-144 https://doi.org/10.7643/ issn.1672-9242.2026.01.016

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