• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.3B
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• pp.335-343
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• 2008

A hydrodynamic numerical model, ESCORT, which enables wetting-and-drying simulation, is developed. The model is verified by applying it at the Mokpo coastal zone together with the MIKE21 model. This paper deals in only 2-dimensional aspects remaining 3-dimensional function for further research. To begin with, MIKE21 model is applied at the whole area where MIKE21 had been applied several times to produce boundary conditions for the main area. Unlike the whole area of uniform grid, main area adopts telescoping grid for ESCORT model and nested grid for MIKE21 model. The results of both model show not only good agreement for the values of water depth and tidal velocity between computed and observed ones, but also plausible wetting-and-drying simulation. However, ESCORT model needs some improvement of efficiency.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.21 no.5
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• pp.357-370
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• 2009

EFDC, ESCORT and MIKE21 models are applied at the Gomso Bay to investigate each models' facilities of tidal flat simulation. Comparisons with observation data show that all models simulate hydrodynamic phenomena and tidal flat well. CPU time and WCM are examined to evaluate the efficiency of the models, and the effects of flooding/drying depth and bottom friction are examined to analyze models' facilities of simulating tidal flat. The EFDC model is considered to be fairly good in accuracy, stability and applicability, it is, however, poor in efficiency and its complexity. While the ESCORT model is superior to the EFDC in simulation of tidal flat, it is inferior to the EFDC in CPU time and simulation of bottom friction. The MIKE21 model is excellent in efficiency, but some numerical noise would be detected at low water, not permitting correction of the model.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.21 no.2
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• pp.164-173
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• 2009

MIKE21, a commercial hydrodynamic model, was applied at the Masan Bay to evaluate the model's applicability of simulating the inundation phenomena. A storm surge/inundation model which adopts overflow computation scheme was applied together for comparison. The results of both models show correspondence with not only observed inundation area but also inundation water depth to prove their ability as inundation models. Especially, the accuracy of the MIKE21 model, which just adopts wetting/drying scheme, does not seem to be behind the inundation model. Moreover, an inundation simulation of the virtual MAEMI which was generated at preceding study, was conducted. The inundation area of the virtual MAEMI is similar to that of the real MAEMI, but inundation water depth is deeper than the real MAEMI.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.565-570
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• 2007

최근 들어 인천지역의 개발사업으로 인해 인천연안으로 방류되는 오염물질의 농도가 점점 악화되고 있는 실정이다. 특히, 하수종말처리장 방류수에 의한 인근해안의 영향분석은 중요한 문제 중에 하나라고 할 수 있다. 따라서 본 연구에서는 MIKE21 모형을 이용하여 경기만의 조석전파특성 및 대상지역의 유동상황을 재현하기 위해 하수처리장 증설 지역을 중심으로 경기만 전체를 포함하여 유동해석을 수행하였으며 전체 지역에 대한 유동해석 후 확보한 조석자료를 활용하여 하수처리장 인근지역에 대한 오염물질의 확산 영향에 대해 모의하고 확산방지를 위한 대안을 설정하여 분석을 수행하였다.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.18 no.4
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• pp.348-359
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• 2006

The city of Mokpo suffers lowland inundation damages by sea water flooding even without harsh weather like a typhoon, due to the low level urban infrastructure facilities, oceanic environmental changes by constructions of seadike/seawall and sea level rise caused by global warming. This study performs constructing the simulation system which employs the MIKE21 software. And the system is applied to several typhoon- induced surges which had resulted in inundation at Mokpo. Virtual situation of flooding is simulated in case 59 cm of surge height, which had been occurred actually by RUSA(0215), coincides with Approx. H.H.W. Then the water level of 545 cm corresponds to the extreme high water level(544 cm) for 10 year return period after the construction of Geumho seawall. The results show rapid and broad inundation at Inner-Port, requiring additional preparations for flood protections.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2008.09a
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• pp.228-231
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• 2008

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2008.09a
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• pp.236-239
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• 2008

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2008.09b
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• pp.236-239
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• 2008

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2008.09b
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• pp.228-231
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• 2008

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.28 no.5
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• pp.284-291
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• 2016

A standard typhoon, which results in extreme wind speeds having various return period, can be reconstructed by combination of typhoon parameter informations(Kang et al., 2016). The aim of this study is to present a kind of surge-frequency analysis method by numerical simulation of a standard typhoon at Yeonggwang. MIKE21 was adopted as a numerical model and was proved to simulate the surge phenomena of the typhoon BOLAVEN(1215) well at several sites of the Western Coast. The simulation results with change of typhoon track which reflects typhoon-surge characteristics of the Western Coast show to have something in common with the observational results. This method is considered to be very efficient method on the point of simulating only one typhoon, while existing methods need to simulate a lot of typhoons.