NDLI: Analysis of Dynamic Stresses of Pump-Turbine Runner during Load Rejection Process in Turbine Mode

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Analysis of Dynamic Stresses of Pump-Turbine Runner during Load Rejection Process in Turbine Mode

Content Provider	Scilit
Author	Liujingshi Chen, Funan Yang, Xiaolong Bi, Huili Mao, Zhongyu Luo, Yongyao Fan, Hongang Wang, Zhengwei
Copyright Year	2021
Description	Journal: Iop Conference Series: Earth and Environmental Science During load rejection process, the rotation rate, head and discharge change a lot and the internal flow of the runner is complex, leading to fatigue cyclic loads on the runner. In some cases, fatigue cracks appear at the stress concentration location of the runner. This paper studied the dynamic stresses of a pump-turbine runner during load rejection process in turbine mode using finite element method. The hydraulic loads were obtained from CFD analysis, and the clearance flow was taken into consideration in the CFD simulation. The variation of performance characteristics was calculated through the one-dimensional method of characteristic (1D-MOC). The results show that the pressure on outer surfaces of runner changed the stress of the runner, and the rotation rate had a great influence on the dynamic stresses of the runner.
Related Links	https://iopscience.iop.org/article/10.1088/1755-1315/774/1/012100/pdf
ISSN	17551307
e-ISSN	17551315
DOI	10.1088/1755-1315/774/1/012100
Journal	Iop Conference Series: Earth and Environmental Science
Issue Number	1
Volume Number	774
Language	English
Publisher	IOP Publishing
Publisher Date	2021-06-01
Access Restriction	Open
Subject Keyword	Journal: Iop Conference Series: Earth and Environmental Science Energy and Fuel Technology Load Rejection Rejection Process Dynamic Stresses
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Physics and Astronomy Environmental Science

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