Effect of interface condition on the hydraulic performance of a pump-turbine at various guide vane opening conditions in pumping mode

Jun Won Suh, Won Gu Joo, Seung Jun Kim, Young Seok Choi, Jin Hyuk Kim, Jungwan Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Nowadays, pumped-storage power stations require high flexibility and reliability in operation under off-design conditions, especially in the pump mode. When a pump-turbine operates under various part load conditions in pump mode, highly dynamic phenomenon such as stationary vortex and rotating stall occur. Therefore, the performance characteristics in pump mode are vital for the safe and effective operation. A number of studies have been conducted to investigate the flow characteristics in turbine or pump mode under different GVOs through numerical simulations. However, the studies about influence of the position of interface and interface condition on the pump characteristics of pump-turbines are not completely clear. In this paper, the three-dimensional steady and unsteady Reynolds-averaged Navier–Stokes equations were solved for a detailed analysis of the influence of interface conditions with various guide vane opening conditions in pump mode. To ensure the reliability of the numerical analysis, the numerical results were validated in comparison with the experimental data.

Original languageEnglish
Title of host publicationFluid Applications and Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859056
DOIs
Publication statusPublished - 2019 Jan 1
EventASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019 - San Francisco, United States
Duration: 2019 Jul 282019 Aug 1

Publication series

NameASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
Volume3B-2019

Conference

ConferenceASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019
CountryUnited States
CitySan Francisco
Period19/7/2819/8/1

All Science Journal Classification (ASJC) codes

  • Fluid Flow and Transfer Processes

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    Suh, J. W., Joo, W. G., Kim, S. J., Choi, Y. S., Kim, J. H., & Park, J. (2019). Effect of interface condition on the hydraulic performance of a pump-turbine at various guide vane opening conditions in pumping mode. In Fluid Applications and Systems [4800] (ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference, AJKFluids 2019; Vol. 3B-2019). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/AJKFluids2019-4800