• Proceedings of the Korean Nuclear Society Conference
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• 2004.05a
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• pp.512.2-512.2
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• 2004

• The Science & Technology
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• no.6 s.433
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• pp.68-71
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• 2005

• Proceedings of the Korea Water Resources Association Conference
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• 2003.05b
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• pp.1055-1058
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• 2003

• Proceedings of the Korean Nuclear Society Conference
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• 1999.10a
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• pp.363.1-363
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• 1999

• Water for future
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• v.52 no.5
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• pp.36-41
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• 2019

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.3B
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• pp.323-334
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• 2008

Present study examined the functionality of the solitary wave (tsunami) control of the two-rowed porous submerged breakwater by numerical experiments, using a numerical wave tank which is based on the Navier-Stokes equation to explain fluid fields and uses a Volume of Fluid (VOF) method to capture the free water surface. Solitary wave was generated by the internal wave source installed within the computational zone in the numerical wave tank and its wave transformations by structure were compared with those in the previous study. Comparisons with the precious numerical results showed a good agreement. Based on these results, several tow-dimensional numerical modeling investigations of the water fields, including wave transformations, reflection, transmission and energy flux, by the one- and two-rowed permeable submerged breakwater under solitary waves were performed. Even if, it is a research of the limited scope, in case of two-rowed permeable submerged breakwater with $h_0/h=0.925$ ($h_0$ is height of submerged breakwater and h is water depth), the wave height damping in range of $l/L_{eff}>0.4$($L_{eff}$ is effective distance of solitary wave) can reach nearly 60% of the incident wave height. In addition, it is found that reflection coefficient increases nearly 47% and transmission coefficient decreases nearly 18% than one-rowed one. The numerical results revealed that the tow-rowed submerged breakwater can control the incident solitary wave economically and more efficiently than the one-rowed one.

• The Journal of the Korea institute of electronic communication sciences
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• v.1 no.2
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• pp.95-101
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• 2006

Those days, not only Many peoples are killed and the wounded by effective of earthquake sea wave in Indonesia, but also our country effected by earthquake in adjoining sea to japan. At this point, preparation to earthquake and the point of quickly communication by happened earthquake. For this reason perceptible observation post are making so quickly communication system to zone by effective range of earthquake, and develope than more quality observation tool, contribute to keep citizens property and life to a minimum by earthquake damaged.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.158-159
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• 2013

지구온난화는 수십년전부터, 지구 온난화의 진행속도를 줄이기 위해 기후협약 등을, 그 일환으로 이산화탄소의 배출이 없는 신재생에너지. 하지만 이러한 노력에도 불구하고 지구온난화는 가속되고 있으며, 그 영향으로 지구의 온도는 매년 상승하여 전 세계적인 기상이변을 야기시키고 있다. 그 중에서도 최근에 많이 발생하고 있는 폭우 및 태풍으로 인한 해안 지역의 피해가 점차 증가하고 있으며, 해양 암반층에 의한 지진으로 발생하는 2차 피해인 해일(쓰나미)에 의한 피해로 세계 각국이 엄청난 인명과 재산 피해를 입고 있어, 그 피해 방지책 등을 고민하고 있다. 하지만 해일을 막는 것은 쉽지 않은 일이며, 계속해서 인류가 해양으로 진출해야 하는 시점에서 해양 재난을 막고 육지에 고갈된 자원을 대체하여 해양의 자원 등을 손쉽게 이용할 수 있도록 안전장치를 만드는 것은 앞으로 매우 중요한 관심사항이 될 것이 자명하다. 이에 본 논문에서는 크게 세가지 기술에 대해서 논하고자 한다. 첫째, 해일(쓰나미)의 피해를 줄이기 위한 기술들. 해양의 자원 개발에 의한 환경 피해를 막으면서 해양 자원을 효율적으로 이용할 수 있는 기술. 셋째, 친환경적이고 효율적인 해양 방파제에 대한 기술이다.

• 한국방재학회:학술대회논문집
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• 2007.02a
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• pp.172-176
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• 2007

In this study, the numerical model for simulation of tsunamis is constructed by using the dispersion-correction scheme, 2nd upwind scheme, dynamic linking method, and so forth. The composed numerical model is used to simulate a hitorical tsunami event. The target tsunami event is the 1983 Central East Sea Tsunami. And, the predicted run-up heights of the tsunami at Imwon port are very reasonable compared to available observed data.

• 한국방재학회:학술대회논문집
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• 2007.02a
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• pp.395-398
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• 2007

In this study, new dispersion-correction terms are added to leap-frog finite difference scheme for the linear shallow-water equations with the purpose of considering the dispersion effects of the linear Boussinesq equations for the propagation of tsunamis. The new model is applied to near Gadeok island in Pusan about The Central East Sea Tsunami in 1983 and The Hokkaldo Nansei Oki Earthquake Tsunami in 1993 one simulated in the study.