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An efficient approach for frequency‐domain and time‐domain hydrodynamic analysis of dam–reservoir systems
Author(s) -
Lin Gao,
Wang Yi,
Hu Zhiqiang
Publication year - 2012
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.2154
Subject(s) - discretization , compressibility , arch dam , time domain , frequency domain , domain (mathematical analysis) , boundary value problem , geology , gravity dam , boundary (topology) , mechanics , finite element method , engineering , geotechnical engineering , structural engineering , computer science , mathematical analysis , mathematics , physics , computer vision
SUMMARY An efficient procedure is developed for the hydrodynamic analysis of dam–reservoir systems. The governing equations of hydrodynamic pressure in the frequency as well as time domain are derived in the framework of the scaled boundary finite element method. The water compressibility and absorption of reservoir sediments can be conveniently taken into consideration. By extending the reservoir to infinity with uniform cross‐section, only the dam–reservoir interface needs to be discretized to model the fluid domain, and the hydrodynamic pressure in the stream direction is solved analytically. Several numerical examples including a gravity dam with an inclined upstream face and an arch dam with a reservoir of arbitrary cross‐section are provided to demonstrate the computational efficiency and accuracy of the proposed method. Copyright © 2012 John Wiley & Sons, Ltd.