A5100618776- Nuclear Engineering Thermal-Hydraulics
- Nuclear reactor physics and engineering
- Heat Transfer and Boiling Studies
- Nuclear Materials and Properties
- Fluid Dynamics and Turbulent Flows
- Heat transfer and supercritical fluids
- Fluid Dynamics and Mixing
- Particle Dynamics in Fluid Flows
- Digital Holography and Microscopy
- Combustion and Detonation Processes
- Heat Transfer and Optimization
- Nanofluid Flow and Heat Transfer
- Mechanical and Optical Resonators
- 3D Shape Modeling and Analysis
- Fluid Dynamics and Heat Transfer
- Flow Measurement and Analysis
- Simulation and Modeling Applications
- Advanced MEMS and NEMS Technologies
- Combustion and flame dynamics
- Heat Transfer Mechanisms
- Aerosol Filtration and Electrostatic Precipitation
- Manufacturing Process and Optimization
- Acoustic Wave Resonator Technologies
- Laser and Thermal Forming Techniques
- Advancements in Photolithography Techniques
Korea Atomic Energy Research Institute
2013-2024
University of Illinois Urbana-Champaign
2018-2020
Massachusetts Institute of Technology
2019
Pohang University of Science and Technology
2007
As passive safety features for nuclear power plants receive increasing attention, various studies have been conducted to develop systems 3rd-generation (GEN-III) that are driven by systems. The Passive Auxiliary Feedwater System (PAFS) is one of several being designed the Advanced Power Reactor Plus (APR+), and extensive complete its design verify feasibility. Because PAFS removes decay heat from reactor core under transient accident conditions, it necessary evaluate removal capability...
In the areas of micro- and nanoresonant sensing, energy harvesting, signal processing, ability to provide resonance over a broad frequency bandwidth is persistent goal. One strategy for broadband resonator that researchers focus on exploit relatively large-amplitude response nanoresonators operating in geometrically nonlinear dynamic regime. Geometric nonlinearity well known have hardening effect curve, thereby generating resonance, which limited by linearized resonant (lower bound)...
Korea Atomic Energy Research Institute (KAERI) has designed and constructed a test facility for reactor coolant pumps (RCPs). The RCP Test Facility (RCPTF) the capability to under operation condition of an Advanced Power Reactor 1400 MW (APR1400). design values are 17.2 MPa, 343 °C, 11.7 m3/s, 13 in maximum pressure, temperature, flow rate, electrical power, respectively. In facility, it is possible perform type newly-developed as well production before its installation nuclear power plant....
The main objective of this study is to investigate experimentally the two-phase flow characteristics in terms direct contact condensation a steam–water stratified horizontal rectangular channel. Experiments were performed for both air–water and flows with co-current configuration. This work presents local temperature velocity distributions water layer as well interfacial condensing noncondensing fluid flows. gas superficial varied from 1.2 m/s 2.0 air 2.8 steam under fixed inlet 0.025 m/s....
The passive auxiliary feedwater system (PAFS) is one of the advanced safety features adopted in Advanced Power Reactor Plus (APR+) and designed to completely replace a conventional, active system. With aim validating cooling operational performance PAFS, separate effect test facility, PAFS Condensing heat removal Assessment Loop (PASCAL), was constructed by simulating single condensation exchanger (PCHX) tube submerged tank (PCCT) according volumetric scaling methodology. During pool water...
Variations of temperature and velocity fields in a Hele–Shaw convection cell (HSC) were investigated using holographic interferometry 2D PIV system with varying Rayleigh number. To measure quasi-steady variation the field, two different measurement methods interferometry—the double-exposure method real-time method—were employed. In method, unwanted waves eliminated effectively digital image processing technique. The reconstructed images are clear, but transient flow cannot be clearly. On...
We report the fabrication and characterization of a sensitivity-stabilized fiber-optic probe for electric field sensing, which exhibits signal fluctuations less than ±0.2 dB with any polarization state incident beam. The instability issue in fiber-coupled sensors, often occurs due to birefringence drift lengthy optical fibers, can be well addressed proposed birefringence-free interferometric modulation scheme. fiber sensor could an excellent solution ultra-long remote sensing applications...
The direct contact condensation and subsequent thermal mixing by the injected steam jet onto a quiescent coolant inside tank were examined experimentally to simulate phenomena in passive safety injection systems. Specifically, influence of velocity was studied. Even though total flow rate unchanged, pressure increased quickly at larger nozzle diameter. Additionally, diameter, thickness zone decreased because amount decreased. For in-depth study on role size for mixing, particle image...
The PRIUS program was established to generate an experimental database for the 6 × 4 and 12 rod bundle geometry. will be used address subchannel CFD code analysis required modeling validation. This is necessary because Small Break Loss of Coolant Accident (SBLOCA) Intermediate (IBLOCA) present three-dimensional phenomena in core due radial power profile, crossflow, diffusion-dispersion. Therefore, specific programs are required, especially during reflooding, investigate large-scale effects....