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http://dx.doi.org/10.7734/COSEIK.2019.32.5.323

Computational Model for Hydrodynamic Pressure on Radial Gates during Earthquakes  

Phan, Hoang Nam (Faculty of Road and Bridge Engineering, The University of Danang)
Lee, Jeeho (Department of Civil and Environmental Engineering, Dongguk University-Seoul)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.32, no.5, 2019 , pp. 323-331 More about this Journal
Abstract
In this study, a computational model approach for the modeling of hydrodynamic pressures acting on radial gates during strong earthquakes is proposed. The use of the dynamic layering method with the Arbitrary Lagrangian Eulerian (ALE) algorithm and the SIMPLE method for simulating free reservoir surface flow in addition to moving boundary interfaces between the fluid domain and a structure due to earthquake excitation are suggested. The verification and validation of the proposed approach are realized by comparisons performed using the renowned formulation derived by the experimental results for vertical and inclined dam surfaces subjected to earthquake excitation. A parameter study for the truncated lengths of the two-dimensional fluid domain demonstrates that twice the water level leads to efficient and converged computational results. Finally, numerical simulations for large radial gates with different curvatures subjected to two strong earthquakes are successfully performed using the suggested computational model.
Keywords
radial gate; hydrodynamic pressure; earthquake excitation; computational model;
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