Release Time:2022-09-14  Hits:

Indexed by: Journal Article

Date of Publication: 2022-06-29

Journal: 水力发电学报

Issue: 6

Page Number: 192-197

ISSN: 1003-1243

Abstract: A potential-based fluid element was used to simulate the fluid in the flow passage of a hydropower house,and its natural vibration characteristics and seismic responses were calculated by a FEM model.These calculations were compared with those obtained by a no-fluid model,and the effect of fluid in the flow passage on the structure dynamic characteristics was analyzed.The results show that fluid in the flow passage causes a change in the natural vibration characteristics of hydropower house,generally leading to greater vibration displacement and greater vibration stress of structure than the no-fluid case.Such change influences the vibration displacement and stress in the upper structure of the house more than those in the lower structure.

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