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J. Mar. Sci. Eng. 2016, 4(3), 49; doi:10.3390/jmse4030049

Performance Assessment of NAMI DANCE in Tsunami Evolution and Currents Using a Benchmark Problem

1
Civil Engineering Department, Middle East Technical University, Ankara 06800, Turkey
2
Ocean Engineering Department, University of Rhode Island, Narragansett, RI 02882, USA
3
Civil Engineering Department, Middle East Technical University, Ankara 06800, Turkey
4
Department of Applied Mathematics, Nizhny Novgorod State Technical University, Nizhny Novgorod 603950, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Richard P. Signell
Received: 5 July 2016 / Revised: 2 August 2016 / Accepted: 12 August 2016 / Published: 18 August 2016
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Abstract

Numerical modeling of tsunami evolution, propagation, and inundation is complicated due to numerous parameters involved in the phenomenon. It is important to assess the performance of numerical codes that solve tsunami motion, as well as flow and velocity patterns. NAMI DANCE is a computational tool developed for the modeling of long waves. It provides numerical modeling and efficient visualization of tsunami generation, propagation, and inundation mechanisms and computes the tsunami parameters. In the theory of long waves, the vertical motion of water particles has no effect on the pressure distribution. Based upon this approximation and neglecting vertical acceleration, the equations of mass conservation and momentum are reduced to two-dimensional depth-averaged equations. NAMI DANCE uses finite difference computational method to solve linear and nonlinear forms of depth-averaged shallow water equations in long wave problems. In this study, NAMI DANCE is applied to a benchmark problem which was discussed in the 2015 National Tsunami Hazard Mitigation Program (NTHMP) annual meeting in Portland, USA. The benchmark problem features a series of experiments in which a single solitary wave propagates up a triangular shaped shelf which has an offshore island feature. The problem provides detailed free surface elevation and velocity time series in the vicinity of the island. The comparison of the results showed that NAMI DANCE is able to satisfactorily predict long wave evolution, propagation, amplification, and tsunami currents. View Full-Text
Keywords: numerical modeling; tsunami currents; depth-averaged equation; benchmark numerical modeling; tsunami currents; depth-averaged equation; benchmark
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Velioglu, D.; Kian, R.; Yalciner, A.C.; Zaytsev, A. Performance Assessment of NAMI DANCE in Tsunami Evolution and Currents Using a Benchmark Problem. J. Mar. Sci. Eng. 2016, 4, 49.

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