Numerical Simulation and Formulation of Wave Run-Up on Dam Face due to Ground Oscillations Using Major Earthquake Acceleration Records
Publication: Journal of Engineering Mechanics
Volume 142, Issue 6
Abstract
A previously developed computational model is used for wave run-up analysis in a generic two-dimensional reservoir subjected to major earthquake acceleration records. The model is based on numerical solution of the Navier-Stokes equations and pressure equation considering compressibility effects. An existing model has been revised by the volume of fluid (VOF) method with piecewise linear interface calculation (PLIC) to be able to compute violent wave motion in the reservoir and to predict the maximum wave run-up on the dam crest attributable to ground oscillations during an earthquake. The numerical method and the computer code are validated by comparing the free-surface waves with the data available in the literature. The surface wave run-up on a vertical dam is simulated for different reservoir depths using major earthquake acceleration records. Simulations show that the maximum wave height on a dam body depends on the maximum positive ground velocity. On the basis of dimensional analysis, simulation results are presented in a simple dimensionless expression that is proposed for the prediction of the maximum wave run-up on a dam face subjected to earthquake excitation. The proposed relationship can be used for estimation of safety freeboard of dams against earthquake-generated surface waves.
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Acknowledgments
The numerical calculations reported in this paper were performed at TUBITAK ULAKBIM, High Performance and Grid Computing Center (TRUBA Resources).
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© 2016 American Society of Civil Engineers.
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Received: Mar 17, 2015
Accepted: Dec 21, 2015
Published online: Feb 25, 2016
Published in print: Jun 1, 2016
Discussion open until: Jul 25, 2016
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