High Performance Computing Group
for Nuclear Systems and Safety
Innovation of Nuclear Systems & Safety through Advanced Modeling & High Performance Computing
Innovation of Nuclear Systems & Safety through Advanced Modeling & High Performance Computing
Innovation of Nuclear Systems & Safety through Advanced Modeling & High Performance Computing
Innovation of Nuclear Systems & Safety through Advanced Modeling & High Performance Computing
Innovation of Nuclear Systems & Safety through Advanced Modeling & High Performance Computing
Innovation of Nuclear Systems & Safety through Advanced Modeling & High Performance Computing
Our laboratory is addressing technical challenges in nuclear systems & safety using advanced modeling, high-fidelity experiment, and innovative design empowered by high performance computing.
Prof. Eung Soo Kim, Head of High Performance Computing Group for Nuclear Systems & Safety at Seoul National University
ESLAB at SNU advances technology in modeling & simulation by which scientists and engineers find new ways to tackle nuclear systems & safety challenges—challenges that cannot be addressed through traditional method alone. High Performance Computing (HPC) enables unprecedented large-scale numerical models for studying and simulating complex multi-physics problems in nuclear systems & safety that would otherwise be too expensive, too dangerous, or even impossible to study by direct experimentation.
With state-of-the-art computational modeling and predictive simulation capabilities, HPC reduces the risks and uncertainty that are often barriers to industry adopting new and innovative technologies. Our research efforts enable to save time and money and to significantly improve the breakthroughs and useful advances. Incorporating these capabilities, therefore, innovate nuclear systems & safety in efficiency, effectiveness, and reliability across all the activities including design, manufacturing, regulation, and policy making.
Ju Ryong Park implemented Lagrangian Stochastic Model (LDM) in SOPHIA framework and integrated it with meteorological data and GIS. Very fast! in GPU computing environment. (https://www.youtube.com/watch?v=GVd3uHi7TQY).
Hee Sang Yoo conducted water conducted water entry projectile simulations for various surface wettability. Multi-phase SPH model is applied and PF-SPH is utilized for surface tension and wettability control with appropriate physical manners. Great Simulations & Rendering! Refer to the following link (https://youtu.be/QZf81Z1dZPk).
The SOPHIA code, a particle-based multi-physics simulation code based on GPUs, finally made license agreement with OECD-NEA Databank. The SOPHIA code is now officially released to the OECD-NEA Member Countries and USA & Canada. Refer to the following link (https://www.oecd-nea.org/tools/abstract/detail/nea-1911/).
So-Hyun Park is awarded the Best Paper Award in ICONE 2020 Conference for her paper entitled as "High Resolution 3D Simulation of Melt Jet Breakup Phenomenon Using Multi-GPU-based Smoothed Particle Hydrodynamics Code and Comparison with Experimental Result". Congratulations!
Dr. Young-Beom Jo is selected to be awarded the Best Paper Award in KNS 2020 Spring Meeting for his paper entitled as "Numerical Simulation of 3-Phase Debris Bed Hydrodynamic Behavior Using Multi-phase SPH-DEM Coupling". Congratulations!
Dr. Minseop Song's new paper has been published and now available online in Nuclear Engineering & Design (NED) Journal. Congratulations!(https://www.sciencedirect.com/science/article/pii/S0029549320303988?dgcid=author).
· 2021 ~ Professor, Seoul National University, South Korea
· 2016 ~ 2020 Associate Professor, Seoul National University, South Korea
· 2012 ~ 2015 Assistant Professor, Seoul National University, South Korea
· 2009 ~ 2011 Staff Scientist/Engineer, Idaho National Laboratory, USA
· 2006 ~ 2009 Postdoc, Idaho National Laboratory, USA
· 2006 Postdoc, KAIST, South Korea
· 2006 Ph.D., KAIST, South Korea
paul406@snu.ac.kr
#SPH, #DEM. #Multi-phase,
#Severe Accident, #Granular Micro Reactor
bibirom10@snu.ac.kr
#SPH, #Natural Convection,
#Severe Accident, #In-Vessel-Retention
chy7452@snu.ac.kr
#SPH, #High Accuracy, #Correction,
#Jet Fragmentation, #Rigid Body
bbada3290@snu.ac.kr
#SPH, #Gas, #Turbulence
michle11@snu.ac.kr
#SPH, #MHD, #Pinch Plasma, #Granular Micro Reactor
uhaha118@snu.ac.kr
#SPH, #ASPH,
#Shockwave, #Explosion, #Granular Micro Reactor
zks1124@snu.ac.kr
#SPH, #Bubble Dynamics,
#Phase-Field-Model, #HPC, #GPU
yhs0365@snu.ac.kr
#SPH, #Surface Tension, #Microfluidics, #ALE, #Axisymmetric
zrkanl0521@snu.ac.kr
#SPH, #Structure, #FSI, #GIS, #Evacuation, #ABM
georgechae@snu.ac.kr
#SPH, #DEM, #Boiling,
#Non-spherical, #Granular Micro Reactor
wlsdn1362@snu.ac.kr
#SPH, #Gas, #Reaction,
#Boundary Condition, #Granular Micro Reactor
cjs8088@snu.ac.kr
#Flow Visualization, #Machine Learning,
#PIV, #AI-SPH
itts9904@snu.ac.kr
#Lagrangian Stochastic Dispersion, #Radioactive Dispersion, #Evacuation, #GIS, #SPH
hyen0929@snu.ac.kr
#SPH, #Particle Split/Merge,
#Multi-resolution, #Evacuation, #GIS
hwan0713@snu.ac.kr
#Machine Learning, #SPH
chijongsung@snu.ac.kr
#Micro-Reactor, #Nuclear Underwater Vehicle
ss10248s@snu.ac.kr
#Dispersion, #Evacuation
Korea Atomic Energy Research Institute (KAERI)
Senior Researcher
Idaho National Laboratory, USA
(INL)
Postdoctoral Researcher
Seoul National University
(SNU)
BK Postdoc
Korea Institute of Nuclear Safety
(KINS)
Senior Researcher
Korea Atomic Energy Research Institute (KAERI)
Researcher
Massachusetts Institute of Technology, USA
(MIT)
Ph.D Candidate
Korea Institute of Nuclear Safety, Korea
(KINS)
Staff Engineer
Seoul National University
(SNU)
Postdoctoral Researcher
High Performance Computing (HPC) enables unprecedented large-scale numerical models for studying and simulating complex multi-physics problems in nuclear systems & safety that would otherwise be too expensive, too dangerous, or even impossible to study by direct experimentation. Incorporating these capabilities can innovate nuclear systems & safety in efficiency, effectiveness, and reliability across all the activities from design & manufacturing to regulation & policy making.
Hae-Yoon Choi (2020)
#SPH #Rigid Body #Coupling #GPU #Fluid Flow
Joo-Ryong Park (2020)
#GIS #MATSIM #HYSIS #Evacuation #MESH #Nuclear #Disaster
Do-Hyun Kim (2020)
#GIS #Blender #Evacuation #3 Dim #Dispersion #Geographic
Su-San Park (2020)
#DEM #Jamming #Probability #Boron-free #Secondary Shutdown System
Young Beom Jo (2019)
#SPH #LMR #Safety #Nuclear #Sloshing #GPU #Severe Accident
So Hyun Park (2020)
#SPH #LWR #Severe Accident #IVR #ERVC #Natural Convection #MARS
Eung Soo Kim (2017)
#SPH #LWR # Severe Accident #Thermal Ablation #MCCI #Multi-Fluid
So-Hyun Park (2019)
#SPH #Jet Breakup #FCI #LWR #Severe Accident #Fragmentation #Multi-GPU
Jin Woo Kim (2020)
#SPH #Gas #Multi-Component #Combustion #Split #Open Boundary
Hoon Chae (2020)
#SPH #FCI #LWR #Severe Accident #Melt Jet Relocation
Su-San Park (2020)
#SPH #Magnetohydrodynamics #Plasma #Pinch #ASPH
Young Beom Jo (2020)
#SPH #DEM #Coupling #Self-Leveling #Multi-phase #LWR #Severe Accident
Hee Sang Yoo (2020)
#SPH #PFSPH #Surface Tension #Water Entry #Contact Angle #Cavity
Tae Hoon Lee (2020)
#SPH #Fluid Structure Interaction #FSI #Elastic #Coupling
Yerlyn Ann (2019)
#SPH #Two Phase #Lift Force #Open Boundary #Linear Shear Flow
Hee Sang Yoo (2020)
#SPH #Droplet #Surface Tension #Wettability #Self-Propelled Jumping
Jin Hyun Kim (2020)
#SPH #ASPH #Shockwave #Underwater Explosion #Safety
Hee Sang Yoo (2020)
#SPH #Eulerian #Lagrangian #ALE #WCSPH #Shifting
So-Hyun Park et al. (2019)
#SPH #High Performance Computing #HPC #Multi-GPU #Parallelization
Joon Sung Choi et al. (2020)
#SPH #AI #Machine Learning #Interpolation
Min-Seop Song (2019)
#CFD #ANSYS-CFX #SFR #Turbulence #Wire-wrap
Simulation Gallery
Water Entry Projectile Simulation using Multi-phase PF-SPH Model by Hee Sang Yoo (2020)
Droplet Impact Simulation on Hydrophobic Surface using SPH by Hee Sang Yoo (2020)
Droplet Spreading Simulation for Various Contact Angles using PF-SPH Model by Hee Sang Yoo (2020)
X-Pinch Simulation using Resistive MHD SPH Model - Conducted by Su-San Park (2020)
Eulerian Lagrangian SPH Modeling - Simulated by Hee Sang Yoo (2020)
Eulerian SPH for 3-D Karman Vortex Problem- Simulated by Hee Sang Yoo (2020)
MESH (MATSIM Evacuation Simulation Coupled with HYSPLIT) Platform - Developed by Joo Ryong Park (2020)
MATSIM Evacuation Simulation in Seoul National University Area - Simulated by Do Hyun Kim (2020)
Multi-Rigid Body coupled with SPH in GPU framework - Simulated by Hae Yoon Choi (2020)
CH4 combustion simulation using SPH - Simulated by Jin Woo Park (2020)
Eulerian-Lagrangian mixed simulation using SPH - Simulated by Hee Sang Yoo (2020)
Natural convection simulation with multiple layers: SPH-MARS coupling - Simulated by So Hyun Park (2020)
3-phase SPH-DEM coupling with open boundary - Simulated by Young Beom Jo (2020)
Water entry projectile simulation for different wettability using SPH - Simulated by Hee Sang Yoo (2020)
Natural convection with mass diffusion - Simulated by Eung Soo Kim (2018)
Liquid-gas-particle interactions (fluid: SPH, debris:DEM) - Simulated by Young Beom Jo (2020)
Fluid & solid particle interactions (fluid: SPH, particle: DEM) - Simulated by Young Beom Jo (2020)
Fluid & solid interactions (fluid: SPH, particle: DEM) - Simulated by Young Beom Jo (2020)
Fuel coolant interactions (FCI) with air entrapment - Simulated by So Hyun Park (2019)
LMR molten core sloshing behavior in structures - Simulated by Young Beom Jo (2019)
Bubble trajectories in linear shear flow - Simulated by Yelyn Ahn (2019)
Melt jet ejection in solid structures - Simulated by Hoon Chae (2020)
Underwater Explosion - Simulated by Jin Hyun Kim (2020)
Particle split/merge - Simulated by Do Hyun Kim (2020)
Double diffusive convection - Simulated by So Hyun Park (2019)
Solid particle piling behavior in square hopper (DEM) - Simulated by Young Beom Jo (2019)
SLAB detonation & shock propagation - Simulated by Su-San Park (2019)
Water entry of a solid sphere with hydrophobic surface - Simulated by Hee Sang Yoo (2019)
Structural analysis using SPH - Simulated by Tae Hoon Lee (2019)
Vorticity field of von Karman vortex street behind a circular cylinder at Re=200 - Simulated by Jin Woo Kim (2019)
Thermal ablation & melting by heating source - Simulated by Eung Soo Kim (2017)
Water entry of a solid sphere with non-uniform wettability - Simulated by Hee Sang Yoo (2020)
Pinch plasma with resistive magnetohydrodynamics (MHD) - Simulated by Su San Park (2019)
Self-propelled jumping droplets - Simulated by Hee Sang Yoo (2020)
Capillary force & dynamic contact angle by IPF-based model - Simulated by Hee Sang Yoo (2019)
Fluid behaviors in various viscosities - Simulated by Juryong Park (2020)
Billiard shots - Simulated by Young Beom Jo (2020)
Corium melt spreading with heat transfer & solidification - Simulated by Hae Yoon Choi (2019)
Wave propagation & free surface (ISPH) - Simulated by So Hyun Park (2017)
Fluid structure interaction (SPH) - Simulated by Tae Hoon Lee (2020)
Flow in density gradient with diffusion (SPH) - Simulated by Eung Soo Kim (2018)
Rising bubble in different Re numbers (SPH) - Simulated by So Hyun Park (2020)
In recent years, the high-fidelity experimentation became a critical tool for verification & validation of advanced computational methods in nuclear systems and safety. Flow visualization is an experimental technique that visualizes flow fields & structures, which enables to analyzes their characteristics. We use laser-based flow visualization techniques such as PIV, PLIF, etc with advancing the state-of-the-art measurement techniques.
Min Seop Song (2019)
#PIV #MIR #PLIF #SFR #Core #Wire-wrap #CFD #Validation #Local Velocity
Min Seop Song (2019)
#PIV #MIR #PLIF #SFR #Core #Wire-wrap #CFD #Validation
Min Seop Song (2019)
#PIV #MIR #PLIF #SFR #Core #Wire-wrap #CFD #Validation
Min Seop Song (2019)
#PIV #MIR #PIV #PLIF #SFR #Core #Wire-wrap #CFD #Validation
Ji Hyun Seong (2020)
#PIV #High Resolution #Optical Flow #Benchmark #Jet #Real Images
Ji Hyun Seong (2020)
#PIV #High Resolution #Optical Flow #DNS #Synthetic Images
Joon Sung Choi (2020)
#PIV #Visualization #Robust #Machine Learning
Min Seop Song (2016)
#PIV #MIR #Rapid Prototyping #3-D Printing #Anise Oil
Min Seop Song (2019)
#CFD #SFR #Core #Geometry #Wire-wrap #Vortex #Identification
Choi, H. Y., Chae, H., and Kim, E.S.*, Numerical Simulation on Jet Breakup in the Fuel-Coolant Interaction Using Smoothed Particle Hydrodynamics, Nuclear Engineering and Technology, 2020 (under review).
Yoo, H. S., and Kim, E.S.*, Numerical Analysis on Water Entry of Spherical Projectiles with Various Wettability using Smoothed Particle Hydrodynamics, Ocean Engineering, 2020 (under review).
Park, S.S., Kim, J.H., Park, S.H., and Kim, E.S., SPH Simulation for Pinch Plasma using Non-ideal Resistive MHD Model, TBD, 2020 (in preparation).
An, Y.R., Jo, Y.B., Park, S.H., Kim, J.W., Kim, E.S.*, Modeling Bubble Lifting Behavior in Linear Shear Flow using Smoothed Particle Hydrodynamics, International Journal of Multi-phase Flow, 2020 (in preparation).
Jo, Y.B., Park, S.H., Kim, E.S., Simulation of Vapor Induced 3-Phase Sloshing Behavior using Multi-phase SPH-DEM Coupling, TBD, 2020 (in preparation).
Park, S.H., Chae, H., Jo, Y.B., Kim, E.S.*, Weakly Compressible Smoothed Particle Hydrodynamics for General Gradient Driven Flow, TBD, 2020 (in preparation).
Song, M.S., Jeong, J.H., Kim, E.S.*, CFD Analysis on 19-pin and 32-pin KAERI SFR Wire-wrapped Fuel Bundle Hydraulic Experiments, Nuclear Engineering and Design, 2020 (Accepted).
Jo, Y.B, Park, J.R., Kim, E.S.*, Numerical simulation on LMR molten-core centralized sloshing benchmark experiment using multi-phase smoothed particle hydrodynamics, Nuclear Engineering and Technology, 2020. (https://doi.org/10.1016/j.net.2020.07.039)
Park, S.S., Kim, E.S.*, Jamming probability of granular flow in 3D hopper for non-Janssen saturation regime: DEM analysis, Granular Matter, Vol. 77, 2020. (10.1007/s10035-020-01050-w)
Park, S.H., Jo, Y.B., Kim, E.S.*, Development of Multi-GPU-Based Smoothed Particle Hydrodynamics Code for Nuclear Thermal-hydraulics and Safety: Potential and Challenges, Frontiers in Energy Research, Vol. 8, 2020. (https://doi.org/10.3389/fenrg.2020.00086)
Song, M.S., J.H., Jeong, Kim, E.S.*, Flow visualization on SFR wire-wrapped 19-pin bundle geometry using MIR-PIV-PLIF and comparisons with RANS-based CFD Analysis, Annals of Nuclear Energy, Vol. 147, 2020.(https://doi.org/10.1016/j.anucene.2020.107653)
Seong, J.H., Song, M.S., Nunez, D, Manera, A., Kim, E.S.*, Velocity Refinement of PIV using Global Optical Flow, Experiments in Fluids, Vo. 60, 2019. (https://link.springer.com/article/10.1007/s00348-019-2820-4)
Yoo, H.S., Kim, E.S.*, Heat transfer enhancement in dry cask storage for nuclear spent fuel using additive high density inert gas, Annals of Nuclear Energy, Vol. 132, pp. 108-118, 2019. (https://doi.org/10.1016/j.anucene.2019.04.018)
Lim, D.K., Kim, E.S.*, Song, M.S., Chae, H., Topology Optimization on Vortex-type Passive Fludic Diode for Advanced Nuclear Reactors, Nuclear Engineering and Technology, Vol. 51, 2019. (https://doi.org/10.1016/j.net.2019.03.018)
Song, M.S., Jeong, J.H., Kim, E.S.*, Numerical Investigation on Vortex Behavior in Wire-wrapped Fuel Assembly for Sodium Fast Reactor, Nuclear Engineering and Technology, Vol. 51, pp 665-675, 2019. (https://doi.org/10.1016/j.net.2018.12.012)
Jo, Y.B., Park, S.H., Choi, H.Y., Jung, H.W., Kim, Y.J., Kim, E.S.*, SOPHIA: Development of Lagrangian-based CFD Code for Nuclear Thermal-Hydraulics and Safety Applications, Annals of Nuclear Energy, Vol. 124, pp. 132-149, 2019. (https://doi.org/10.1016/j.anucene.2018.09.005)
Park, S.H., Choi, T.S., Choi, H.Y., Jo, Y.B., Kim, E.S.*, Simulation of a Laboratory-scale Experiment for Wave Propagation and Interaction with a Structure of Undersea Topography near a Nuclear Power Plant using a Divergence-Free SPH, Annals of Nuclear Energy, Vol. 122, pp. 340-351, 2018. (https://doi.org/10.1016/j.anucene.2018.08.045)
Park, M.Y., Kim, E.S.*, Analysis of tritium behaviors on VHTR and forward osmosis integration system, Nuclear Engineering and Design, Vol. 338, pp. 34-51, 2018. (https://doi.org/10.1016/j.nucengdes.2018.07.030)
Shin, S.R., Jeong, J.H., Lim, D.K., Kim, E.S.*, Design of SFR fluidic diode axial port using topology optimization, Nuclear Engineering and Design, Vol. 338, pp. 63-73, 2018. (https://doi.org/10.1016/j.nucengdes.2018.07.028)
Lim, D.K., Park, Y.J., Kim, H.D., Kim, E.S.*,CFD-based shape optimization on cross-section of monoblock fusion divertor cooling channel for minimizing local heat flux, Fusion Engineering and Design, Vol. 136, pp. 1100-1105, 2018. (https://doi.org/10.1016/j.fusengdes.2018.04.077)
Ham, T.K., D.J., Arcilesi, I.H., Kim, Sun, Xiaodong, Christensen, R.N., Oh, C.H., Kim, E.S., Computational fluid dynamics analysis of the initial stages of a VHTR air-ingress accident using a scaled-down model, Nuclear Engineering and Design, Vol. 300, pp. 517-529, 2016. (https://doi.org/10.1016/j.nucengdes.2016.02.011)
Song, M.S., Park, S.H., Kim, E.S.*, Particle image velocimetry measurement of 2-dimensional velocity field around twisted tape, Fusion Engineering and Design, Vol. 109, pp. 596-601, 2016. (https://doi.org/10.1016/j.fusengdes.2016.02.039)
Park, M.Y., Song, M.S., Kim, E.S.*, Development of tritium permeation model for printed circuit heat exchanger, Annals of Nuclear Energy, Vol. 98, pp. 166-177, 2016. (https://doi.org/10.1016/j.anucene.2016.08.001)
Kim, J.S., Kim, B.J., Kim, E.S.*, Oh, C.H., Experimental Study on Fundamental Phenomena in HTGR Small Break Air-Ingress Accident, Annals of Nuclear Energy,Vol. 87, pp. 145-156, 2016. (https://doi.org/10.1016/j.anucene.2015.08.012)
Lee, Y.G., Park, I.W., Park, G.C., Kim, E.S*, and Lee, D.W, Reduction of Circulation Power for Helium-Cooled Fusion Reactor Blanket using Additive CO2 gas, Fusion Engineering and Design, Vol. 100, pp. 436-442, 2015.
Park, M.Y., Shin, S.R., Kim, E.S.*, Effective Energy Management by Combining Gas Turbine Cycles and Forward Osmosis Desalization Process, Applied Energy, Vol. 154, pp. 51-61, 2015.
Park, M.Y., Kim, E.S.*, Development of semi-empirical model for tritium permeation under non-uniform temperature distribution at heat exchanger tube wall, Annals of Nuclear Energy, Vol. 75, pp. 413-420, 2015.
Song, M.S. Choi, H.Y., Sung, J.H., Kim, E.S*., Matching index of refraction of transparent 3D printing models for flow visualization, Nuclear Engineering and Design, Vol. 284, pp. 185-191, 2015.
Park, M.Y., and Kim, E.S.*, Thermodynamic Evaluation on the Integrated System of VHTR and Forward Osmosis Desalination Process, Desalination, vo. 337, pp. 117-126, 2014.
Yoon, S.J., Kim, E.S., and Sabharwall, P., Numerical Study on Crossflow Printed Circuit Heat Exchanger for Advanced Small Modular Reactor, International Journal of Heat and Mass Transfer, vol. 70, pp. 250-263, 2013.
Chang H. Oh, Eung Soo Kim, Isothermal Air-Ingress Validation Experiments, Nuclear Technology, Vol. 181, pp. 68-80 (Recommended for Publication in Nuclear Technology from NURETH-14), 2013.
Su-Jong Yoon, Min-Seup Song, Il-Woong Park, Goon-Cherl Park, and Eung Soo Kim*, Assessment of COMSOL Capability to Analyze Thermal-Hydraulic Characteristic of Korean Helium Cooled Test Blanket, SOFA, Fusion Engineering and Design, Vol. 88, pp. 2240-2243, 2013.
Jeong-Hun Lee, Su-Jong Yoon, Eung Soo Kim, and Goon-Cherl Park, CFD Analysis and Assessment for Cross Flow Phenomena in VHTR Prismatic Core, Heat Transfer Enginnering, vol. 35, pp. 11-12, 2014.
Piyush Sabharwall, Eung Soo Kim, Mike Patterson, Evaluation Methodology for Advance Heat Exchanger Concepts Using Analytical Hierachy Process, Nuclear Engineering and Design, Vol. 248, pp. 108-116, 2012.
Chang H. Oh, Eung S. Kim, Conceptual Study on Air Ingress Mitigation for VHTRs, Nuclear Engineering & Deisgn, Vol. 250, pp. 448-464, 2012.
Chang H. OH, Eung S. Kim, Natural Circulation Patterns in the VHTR Air-ingress Accident and Related Issues, Nuclear Engineering Design, Vol. 249, pp. 228-236, 2012.
You may reach us via web form, or contact us by direct e-mail at
snueslab@gmail.com
Room 209, Building 31, Seoul National University
1, Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea
+82-2-880-7216
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