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http://dx.doi.org/10.12652/Ksce.2016.36.5.0831

Application of 3-D Numerical Wave Tank for Dynamic Analysis of Nonlinear Interaction between Tsunami and Vegetation  

Lee, Woo-Dong (Gyeongsang National University)
Hur, Dong-Soo (Gyeongsang National University)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.36, no.5, 2016 , pp. 831-838 More about this Journal
Abstract
The disaster preventing system using vegetation has been growing in the field of coastal engineering in recent years. To analyze wave and flow fields under nonlinear interactions between tsunami and vegetation, the purpose of this study is to evaluate newly-developed 3-D numerical wave tank including energy dissipation by tsunami-vegetation interaction based on existing N-S solver with porous body model. Comparing numerical results using mean drag coefficient and dynamic drag coefficient due to Reynolds number to existing experimental results it is revealed that computed results considering the dynamic drag coefficient are in good agreement with the laboratory test results for time-domain waveform. In addition, the calculated transmission coefficients of solitary waves in various vegetation densities and incident wave heights are also in good agreement with the experimental values. This confirms the validity and effectiveness of the developed 3-D numerical wave tank with the fluid resistance by vegetation.
Keywords
Tsunami-vegetation interaction; Fluid resistance; Vegetative drag; Solitary wave; 3-D numerical wave tank;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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