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김현성(Hyeon-Seong Kim),임효혁(Hyo-Hyuc Im),한동훈(Dong-Hoon Han),김평중(Pyeong Joong Kim) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
The surges caused by the typhoon of Korea are analysed in Kwangyang Bay. The deviations of the high water level were 74~185㎝ and the maximum deviations of the water level (maximum surges) were 151~240㎝ in Kwangyang Bay during the typhoon. The major parameters of the maximum deviations of the water level are as follows : Analysis shows that the pressure drop increased the sea level by 43~59㎝, the flood of the Sumjin River by 4~5㎝ and the external surge propagation and wind setup by 97~192㎝.
김현성(Hyeon Seong Kim),임효혁(Hyo Hyuc Im),김평중(Pyeong Joong Kim),김현승(Hyun Seung Kim),강재훈(Jae Hoon Kang),임은표(Eun Pyo Im) 한국항해항만학회 2008 한국항해항만학회 학술대회논문집 Vol.2008 No.공동학술
The surges caused by the typhoon of "Nari" which struck the southern coast of Korea are analysed in the center south sea of Korea. The maximum deviations of the water level (maximum surges) were 124~185cm in the center south during the typhoon. The major parameters of the maximum deviations of the water level are as follows : Analysis shows that the pressure drop increased the sea level by 25cm, the flood of the Sumjin River by 4~10cm and the external surge propagation and wind setup by 99~150cm.
김현성(Hyeon Seong Kim),임효혁(Hyo Hyuc Im),김평중(Pyeong Joong Kim),김현승(Hyun Seung Kim),강재훈(Jae Hoon Kang),임은표(Eun Pyo Im) 한국마린엔지니어링학회 2008 한국마린엔지니어링학회 학술대회 논문집 Vol.2008 No.-
The surges caused by the typhoon of "Nari" which struck the southern coast of Korea are analysed in the center south sea of Korea. The maximum deviations of the water level (maximum surges) were 124~185㎝ in the center south during the typhoon. The major parameters of the maximum deviations of the water level are as follows : Analysis shows that the pressure drop increased the sea level by 25㎝, the flood of the Sumjin River by 4~10㎝ and the external surge propagation and wind setup by 99~150㎝.
FLOW-3D<sup>R</sup>를 이용한 항주파 수치모의
강영승(Kang, Young-Seung),김평중(Kim, Pyeong-Joong),현상권(Hyun, Sang-Kwon),성하근(Sung, Ha-Keun) 한국해안해양공학회 2008 한국해안해양공학회 논문집 Vol.20 No.3
대표적인 상용 CFD 코드 중 하나인 FLOW-3D<sup>R</sup>에 포함된 강체에 대한 6-자유도 운동을 적용한 음해법의 GMO 방법을 이용하여 항주파의 재현 가능성을 살펴보았다. 모델에 의한 항주파의 형상 재현시 depth Froude number에 따른 수평 파형이 잘 재현되었으며, 선박의 직선항로 항행시 일정한 수심인 경우와 실제 수심인 경우를 비교함으로써 모델이 수심에 따른 파형의 변화를 잘 재현함을 알 수 있었다. 또한, 모델에 의해 실제 수심조건에서 두 척의 선박이 교차 진행할 경우와 선박이 곡선항로를 항행할 경우에 대한 항주파를 잘 재현할 수 있음을 보였다. 따라서, FLOW-3D<sup>R</sup>를 이용하여 항주파를 수치모의할 경우 관측을 통한 모델의 검 보정을 통해 항로와 항구에서의 항주파를 보다 정확하게 예측할 수 있을 것으로 판단된다. Using the commercial CFD code FLOW-3D<sup>R</sup> which has an implicit General Moving Object (GMO) method, the ship-induced wave has been simulated. In the implicit GMO method of the FLOW-3D<sup>R</sup>, a rigid body's motion which is either user-prescribed (prescribed motion) or dynamically coupled to fluid flow (coupled motion) can be computed with six degrees of freedom (DOF). The simulated horizontal wave patterns are agree with the wave patterns represented by depth Froude number. The model has been well-simulated to generate the depth-dependent wave transformation in comparison of uniform depth case to complicated depth case. Additionally, it shows that ship-induced waves have been reasonably generated by two ships passing each other and by a ship moving in a curve. Therefore, it is suggested that the FLOW-3D<sup>R</sup> model calibrated with observed data should provide more accurate prediction for the ship-induced wave in a certain fairway or harbor.
임효혁(Hyo-Hyuc Im),김현성(Hyeon-Seong Kim),한동훈(Dong-Hoon Han),김평중(Pyeong Joong Kim),한상천(Sang-cheon Han) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
In Korea, Yellow sea which is located west side of korea has a between 2.8 to 8.0 m tidal range. So, Vessel Traffic Support System(VTSS) is designed to provide predicted water level, tidal elevation and tide induced current. VTSS has a 58 tidal constituents from 1 year tide observed data and 23 tidal current constituents from 1 month current data at Dang-lin P.P harbor. Predicted data visualized with graphs, vectors and stick plot. The purpose of VTSS give to information to maritime pilot for help to make decision schedule.