caa a22 4500 467936382 CHVBK 20180406152958.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1007/s11069-006-0022-x doi (NATIONALLICENCE)springer-10.1007/s11069-006-0022-x Fujima Koji Department of Civil and Environmental Engineering, National Defense Academy, 239-8686, Yokosuka, Japan aut Effect of a submerged bay-mouth breakwater on tsunami behavior analyzed by 2D/3D hybrid model simulation [Elektronische Daten] [Koji Fujima] The hybrid numerical model had been developed to simulate a complicated 3D flow around structures generated by tsunami. In the model, the conventional 2D model is adopted for the wide region far from structures and the 3D non-hydrostatic pressure model is used in the limited region adjacent to structures. The applicability of the model is shown by comparisons of the numerical results with the experimental results of the laboratory model tests and the numerical analysis results of the conventional whole 2D simulation. In addition, the effect of a submerged structure at the opening of a breakwater is discussed from the numerical simulations by the hybrid model. The submerged structure improves the stability of the rubble mound and reduces the tsunami inflow into the bay, while it increases the water surface velocity around the opening of the breakwater. The increase of surface velocity causes the increases of impulsive forces by collision with drafts and so on. Springer Science+Business Media B.V., 2006 Tsunami nationallicence 3D model nationallicence Hybrid model nationallicence Tsunami breakwater nationallicence Wave force nationallicence Bottom shear stress nationallicence Natural Hazards Kluwer Academic Publishers 39/2(2006-10-01), 179-193 0921-030X 39:2<179 2006 39 11069 https://doi.org/10.1007/s11069-006-0022-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11069-006-0022-x text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Fujima Koji Department of Civil and Environmental Engineering, National Defense Academy, 239-8686, Yokosuka, Japan aut NATIONALLICENCE 773 0- Natural Hazards Kluwer Academic Publishers 39/2(2006-10-01), 179-193 0921-030X 39:2<179 2006 39 11069 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer