Flow induced noise characterization of pump turbine in continuous and intermittent load rejection processes

Xiuli Mao, Giorgio Pavesi, Diyi Chen, Hengshan Xu and Gaojun Mao

Renewable Energy, 2019, vol. 139, issue C, 1029-1039

Abstract: In order to study pump turbine stability in view of flow induced noise, this paper focuses on two-part operation of one high head reversible turbine: transient load rejection process and intermittent vane closing conditions. Both above simulations are solved by DES turbulent model, additionally, the flow field results are regarded as sound source and analyzed comparatively by LMS software. Except for flow field interpretation, some developing rules of flow induced noise during the period of pump turbine load rejection are found. The result indicates that flow induced noise radiation is consistent with internal fluid characteristics, and the developing trends are similar which acquired from these two part calculations, whereas the values are distinct. This work provides a reference for the study of pump turbine operating stability from the acoustic aspect, and for pump turbine design work as well.

Keywords: Hydroelectric energy; Pump turbine; Load rejection; Pressure fluctuations; Flow induced noise (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:139:y:2019:i:c:p:1029-1039

DOI: 10.1016/j.renene.2019.02.116

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