A5102722102- Wave and Wind Energy Systems
- Fluid Dynamics Simulations and Interactions
- Fluid Dynamics and Vibration Analysis
- Structural Load-Bearing Analysis
- Structural Engineering and Vibration Analysis
- Coastal and Marine Dynamics
- Structural Behavior of Reinforced Concrete
- Hydraulic flow and structures
- Railway Engineering and Dynamics
- Maritime Navigation and Safety
- Engineering Applied Research
- Landslides and related hazards
- Fire effects on ecosystems
- Structural Health Monitoring Techniques
- Underwater Vehicles and Communication Systems
- Vibration and Dynamic Analysis
- RFID technology advancements
- Adaptive Control of Nonlinear Systems
- Geotechnical Engineering and Underground Structures
- Structural Response to Dynamic Loads
- Cavitation Phenomena in Pumps
- Soil Mechanics and Vehicle Dynamics
- Advanced oxidation water treatment
- Geotechnical Engineering and Analysis
- Plasma and Flow Control in Aerodynamics
Gyeongsang National University
2025
University of Canterbury
2019
Hanyang University
2016-2018
Korea Institute of Ocean Science and Technology
2013
Korea Research Institute of Ships and Ocean Engineering
1992-2005
Korean Register (South Korea)
2002-2005
Korea Institute of Science and Technology
2002-2005
Seoul National University
2005
Korean Association Of Science and Technology Studies
2005
This study analyzed and validated a 1 MW hydropower turbine system using computational fluid dynamics (CFD) in conjunction with field test data. The domain of the includes runner blade, vane, duct, both inflow outflow free surface flows. An implicit unsteady flow solver SST k-ω turbulence model were employed. rotational motion rotor blade was simulated moving reference frame (MRF) method. To handle non-conformal mesh among intake, runner, outlet domains, an internal interface boundary...
The investigation has been carried out by treating 1 m3/day of livestock wastewater for 9 months. biological process is composed two reactors connected in series. Each reactor designed to stimulate the growth Bacillus sp., spore-forming aerobic or facultatively anaerobic bacteria. As a consequence, population sp. aptly increased via cycle sporulation, germination and proliferation. With predominant microbial activity comparing activated sludge based on result measuring specific oxygen uptake...
The use of a combination biological and physicochemical methods is promising technique to reduce highly concentrated pollutants in livestock wastewater: firstly, biodegradable organic matters, nitrogen part phosphorus should be removed treatment process then residual non-biodegradable color eliminated by methods. In this study, therefore, the integrations chemical coagulation, activated carbon adsorption, Fenton oxidation ozonation were evaluated provide an appropriate post-treatment for...
The demand for a net protection system mitigating debris flow has increased recently which new energy absorption devices have been hereby developed. purpose of this study is to analyze the behavior and rate brake frame, find an efficient approach its numerical simulation, increase field applicability by analyzing effects. Three methodologies were used purpose. Firstly, quasi-static load tests conducted frame. Secondly, three-dimensional FE modeling was performed buckling fractural steel...
본 논문에서는 타이드 아치형 거더의 라이즈비에 따른 동적증폭을 유한요소해석을 통해 분석하였다. 이동차량하중은 등가 절점하중으로 모델링하였으며 60 km/hr에서 120 km/hr까지의 다양한 범위의 차량속도에 비교하였다. 자세한 분석을 위해 거더중앙부에 최대 동적증폭이 발생하는 시간과 1차 모드 고유주기와의 관계를 해석결과, 동적증폭은 따라 크게 변화하였으며, 특히 라이즈비 0.03 이상일 경우 증가하는 경향을 보였다. 이러한 결과는 거더가 보다 유연해지고 거더 중앙부에서의 동적증폭의 발생시간이 고유주기에 가까워지기 때문으로 판단된다. In this paper the effect of rise ratio on dynamic amplification (DA) tied-arch girder is investigated through a finite element analysis. Equivalent nodal loads are considered for modeling...