Prof. Yeon-Gun Lee
A B O U T U S
세종대학교 원자력 계통해석 연구실에
오신 여러분을 환영합니다
우리 연구실은 사고 시 원자로 시스템에서 발생하는 2상 유동 및 상변화 열전달에 대한 이해를 심화하고,
이를 바탕으로 가동 원전 및 차세대 원자로의 안전성을 향상시킬 수 있는 열수력 기술을 개발하는 연구들을 수행하고 있습니다.
특히 최근에는 기존의 원전 대비 안전성, 유연성 및 활용성이 대폭 향상된 소형모듈원자로가 가져올 혁신적인 변화에 주목하여,
소형모듈원자로의 핵심 설계기술인 피동형 냉각계통에 대한 열유체 분석과 안전성 평가 분야로 연구 영역을 확장하고 있습니다.
원자력 계통해석 연구실은 학생들이 안정적인 환경에서 창의적이고 도전적인 연구를 통해
원자력 열수력 및 안전 분야에서 혁신을 선도하는 연구자로 성장할 수 있는 밑거름이 되고자 합니다.
미래의 원자력 리더로 자라날 학생 여러분의 많은 관심 바랍니다.
MEMBERS
Professional Positions
2024 - Sejong University, Dept. of Quantum and Nuclear Engineering
Associate Professor
2018 - 2024 Jeju National University, Dept. of Nuclear and Energy Engineering
Associate Professor
2019 - 2020 Massachusetts Institute of Technology, Visiting Scholar
2014 - 2018 Jeju National University, Dept. of Nuclear and Energy Engineering
Assistant Professor
2013 - 2014 Jeju National University, Institute for Nuclear Science and Technology
Research Professor
Education
2007 - 2013 Ph.D., Seoul National University, Dept. of Energy System Engineering
* Thesis title: Development of TAPINS code for thermal-hydraulic analysis of
integral pressurized water reactor, REX-10
2003 - 2007 B.S., Seoul National University, Dept. of Nuclear Engineering
김현조 (Hyeonjo Kim)
Undergraduate Student
hyeonjo1129@naver.com
SMR containment heat removal
정창용 (Chang Yong Jung)
Undergraduate Student
22011533@sju.ac.kr
SMR containment heat removal
문소라 (Sora Moon)
Undergraduate Student
22011539@sju.ac.kr
Severe accident analysis
JOIN US!
ALUMNI
유지아 ('23.3 - '25.2), 한국전력기술(주) 스마트기술팀
"Development of a mechanistic model for analyzing condensation heat transfer on passive heat sinks within the containment"
RESEARCH
SMALL MODULAR REACTOR
혁신형 SMR 피동 안전계통 안전성 평가 기술 개발 연구
소형모듈원자로(SMR)는 기존의 원전보다 출력은 줄이고 안전성은 극대화한 차세대 원자로로서, 국내에서는 2030년대 글로벌 시장 진입을 목표로 혁신형 SMR의 개발이 활발히 진행 중입니다. 혁신형 SMR은 자연 순환을 이용한 피동 안전계통을 적용하여 단순한 설계로 고유 안전성을 확보합니다.
혁신형 SMR의 상용화를 위해서는 혁신 설계의 도입에 따른 원자로의 안전성을 평가할 수 있는 검증기술 개발이 필수적입니다. 우리 연구실은 사고 시 철제형 격납용기의 열제거를 수행하는 피동 안전계통에 대한 안전성 평가 기술을 개발하여 SMR의 안전규제를 위한 기술적 근거를 구축합니다.
ADVANCED CONTAINMENT MODELS
원자로격납건물 열수력 해석 모델 고도화 연구
사고 조건에서 원전의 최종 물리방벽인 원자로격납건물의 건전성을 유지하기 위해서는 열제거를 통해 격납건물의 압력과 온도를 낮춰주어야 합니다. 그러나 피동열침원 및 살수 유동에 의한 격납건물 열제거 예측은 매우 단순하고 보수적인 모델에 의존해오고 있습니다.
본 연구에서는 격납건물 피동열침원의 응축모델을 고도화하고, 능동 열제거를 위한 살수유동의 기구학적 모델 개발 및 실험 검증을 수행합니다. 이를 통해 격납건물의 안전여유도를 최적 평가하고, 원전의 안전성을 보다 사실적으로 분석하기 위한 통합해석체계의 구현에 기여하고자 합니다.
SEVERE ACCIDENT ANALYSIS
중대사고 시 방사선원항 방출 해석 및 불확실도 분석 연구
노심의 현저한 손상을 초래하는 중대사고 발생 시 핵연료에서 생성된 방사성 물질이 격납건물 내부로 방출되며, 외부 환경으로 누출 시 큰 피해를 유발할 수 있습니다. 따라서 사고의 영향을 최소화하기 위한 사고 관리 및 대응을 위해서는 방사선원항의 방출 및 수송 거동에 대한 이해가 중요합니다.
우리 연구실은 MELCOR, CINEMA와 같은 중대사고 종합해석코드를 활용하여 방사선원항의 방출 거동에 대한 해석 연구를 수행합니다. 이를 바탕으로 각 해석도구가 방사선원항 분석에서 가지는 불확실도를 평가하며, 더 나아가 AI 기반 방사성 물질 방출 저감시스템의 개발에 기여하고자 합니다.
수행 중 연구개발과제
# 경수형 SMR 원자로격납건물 열제거계통 안전성 평가 규제기반기술 개발, 2024.5 - 2026.12, 소형모듈원자로 규제연구 추진단 (w/ 경희대*, 서울대, 중앙대)
# 경수형 SMR 중대사고 평가 규제검증 기반기술 개발, 2025.4 - 2026.12, 소형모듈원자로 규제연구 추진단 (w/ 서울대*, 한양대)
# 최적 통합해석체계 기구학적 모델 및 검증기술개발, 2022.4 - 2029.12, 한국연구재단 (w/ 서울대*, KAERI, (주)미래와도전)
# 원전 노형별 중대사고 방사선원 평가 및 저감방안 개발, 2022.4 - 2029.12, 한국에너지기술평가원 (w/ (주)한국수력원자력*, KAERI, (주)미래와도전)
# 히트파이프 원자로 안전성 규제검증용 다물리 해석기법 및 체계구축, 2025.4 - 2028.12, 한국원자력안전재단 (w/ 서울대*) [참여]
# 미래 원자력 설계 실습, 2024.5 - 2028.12, 한국에너지기술평가원 (w/ 세종대*, 한양대, 중앙대, (주)미래와도전) [참여]
PUBLICATIONS
International Journal Articles
Yeon-Gun Lee*, Ji-Woong Yoo, Han Sol Park, Jae-Ho Bae, “Forced convection condensation of steam in the presence of air for passive containment cooling of advanced light water reactors: Effect of flow velocity,” International Communications in Heat and Mass Transfer, vol. 163, 108790 (2025) LINK
Jaehyeok Yang, Hyunjin Yong, Sungjin Kim, Il Woong Park*, Yeon-Gun Lee, Sai Raja Gopal Vadlamudi, Hyun Sun Park*, “Critical heat flux dependence on surface orientation and bubble dynamics in pool boiling over silicon and silicon dioxide surfaces,” International Journal of Energy Research, vol. 2025, 6413134 (2025) LINK
Yun Seok Choi, Sung Jin Kim, Il Woong Park*, Hyun Sun Park, Yeon-Gun Lee*, “Experimental investigation on the influence of copper foam characteristics on pool boiling heat transfer,” International Communications in Heat and Mass Transfer, vol. 159, 108318 (2024) LINK
Tae Hoon Lee, Yeon-Gun Lee, Kukhee Lim, Yun-Jae Kim, So-Hyun Park*, Eung Soo Kim*, “Numerical simulation on in-vessel molten corium behavior with external vessel cooling using smoothed particle hydrodynamics,” Nuclear Engineering and Technology, vol. 56, no. 6, pp. 4018-4030 (2024) LINK
Jia Yu, Han Sol Park, Yeon-Gun Lee*, “Estimating allowable operator action time for mitigating multiple-failure accidents in Korean advanced power reactor,” International Journal of Energy Research, vol. 2024, 1249111 (2024) LINK
Il Woong Park, Jia Yu, Sang Min Song, Yeon-Gun Lee*, “Characteristics of hydrogen distribution under steam condensation in an enclosed vessel: steady-state and transient tests,” International Journal of Energy Research, vol. 2023, 8876673 (2023) LINK
Yeon-Gun Lee*, Il Woong Park, “Numerical evaluation of coolability limits of external reactor vessel cooling using an improved thermal-hydraulic system analysis code,” International Journal of Energy Research, vol. 2023, 2375012 (2023) LINK
Il Woong Park, Si Hyuk Yang, Yeon-Gun Lee*, “Degradation of condensation heat transfer on a vertical cylinder by a light noncondensable gas mixed with air-steam mixtures,” International Communications in Heat and Mass Transfer, vol. 130, 105779 (2022) LINK
Min Seop Song, Il Woong Park, Eung Soo Kim, Yeon-Gun Lee*, “Numerical study on thermal-hydraulics of external reactor vessel cooling in high-power reactor using MARS-KS1.5 code: CFD-aided estimation of natural circulation flow rate,” Nuclear Engineering and Technology, vol. 54, no. 1, pp.72–83 (2022) LINK
Il Woong Park, In Yeop Kang, Yeon-Gun Lee*, “An experimental investigation on subcooled boiling flow in a vertical annulus with visualization and local flow parameters measurement,” Transactions of the Korean Society of Mechanical Engineers B, vol. 46, no. 10, pp. 545–553 (2022) LINK
Il Woong Park, In Yeop Kang, Jia Yu, Yeon-Gun Lee*, “Bubble lift-off diameter of lifting-off and ejecting bubbles in subcooled flow boiling,” International Communications in Heat and Mass Transfer, vol. 129, 105727 (2021) LINK
Yeon-Gun Lee*, Sang Gyu Lim, “Implementation of a new empirical model of steam condensation for the passive containment cooling system into MARS-KS code: Application to containment transient analysis,” Nuclear Engineering and Technology, vol. 53, no. 10, pp. 3196–3206 (2021) LINK
Il Woong Park, Si Hyuk Yang, Yeon-Gun Lee*, “Effect of light gas on condensation heat transfer of steam–air mixture and gas stratification,” International Journal of Heat and Mass Transfer, vol. 179, 121716 (2021) LINK
Ji-Woong Yoo, Il Woong Park, Yeon-Gun Lee*, “Effect of the flow velocity of steam-air mixture on the condensation heat transfer on the exterior surface of a vertical cylinder,” Transactions of the Korean Society of Mechanical Engineers B, vol. 45, no. 8, pp. 439–446 (2021) LINK
Un-Ki Kim, Ji-Woong Yoo, Yeong-Jun Jang, Yeon-Gun Lee*, “Measurement of heat transfer coefficients for steam condensation on a vertical 21.5-mm-O.D. tube in the presence of air,” Journal of Nuclear Science and Technology, vol. 57, no. 8, pp. 905–916 (2020) LINK
Il Woong Park, Sin Kim, Yeon-Gun Lee*, “The profiles of the local void fraction close to the heated wall in the subcooled flow boiling,” International Journal of Heat and Mass Transfer, vol. 151, 119438 (2020) LINK
Yeon-Gun Lee, Il Woong Park, Ji-Woong Yoo, Sin Kim*, “Measurement of multi-dimensional distribution of local bubble parameters in a vertical annulus under subcooled boiling conditions,” International Journal of Heat and Mass Transfer, vol. 140, pp. 992–1005 (2019) LINK
Yeon-Gun Lee, Yeong-Jun Jang, Sin Kim*, “Analysis of air-steam condensation tests on a vertical tube of the passive containment cooling system under natural convection,” Annals of Nuclear Energy, vol. 131, pp. 460–474 (2019) LINK
Yeong-Jun Jang, Dong-Jae Choi, Sin Kim, Dong-Wook Jerng, Yeon-Gun Lee*, “Development of an empirical correlation for condensation heat transfer coefficient on a vertical tube in the presence of a noncondensable gas,” Transactions of the Korean Society of Mechanical Engineers B, vol. 42, no. 3, pp. 187–196 (2018) LINK
Yeong-Jun Jang, Dong-Jae Choi, Sin Kim, Myung-Taek Hyun, Yeon-Gun Lee*, “Enhancement of condensation heat transfer rate of the air-steam mixture on a passive condenser system using annular fins,” Energies, vol. 10, no. 11, pp. 1777–1791 (2017) LINK
Yeon-Gun Lee*, Yeong-Jun Jang, Dong-Jae Choi, “An experimental study of air–steam condensation on the exterior surface of a vertical tube under natural convection conditions,” International Journal of Heat and Mass Transfer, vol. 104, pp. 1034–1047 (2017) LINK
Yeon-Gun Lee, Woo-Youn Won, Bo-An Lee, Sin Kim*, “A dual conductance sensor for simultaneous measurement of void fraction and structure velocity of downward two-phase flow in a slightly inclined pipe,” Sensors (Switzerland), vol. 17, no. 5, pp. 1063–1080 (2017) LINK
Anil Kumar Khambampati, Bong Seok Kim, Suk In Kang, Yeon-Gun Lee, Sin Kim, Kyung Youn Kim*, “A boundary element approach for estimating cardiac ejection fraction using electrical impedance tomography,” Journal of Medical Imaging and Health Informatics, vol. 6, no. 3, pp. 609–619 (2016) LINK
Anil Kumar Khambampati, Kyung Youn Kim, Yeon-Gun Lee, Sin Kim*, “Boundary element method to estimate the time-varying interfacial boundary in horizontal immiscible liquids flow using electrical resistance tomography,” Applied Mathematical Modelling, vol. 40, no. 2, pp. 1052–1068 (2016) LINK
Ba-Ro Lee, Yeon-Gun Lee*, “Numerical study of low-pressure subcooled flow boiling in vertical channels using the heat partitioning model,” Transactions of the Korean Society of Mechanical Engineers B, vol. 40, no. 7, pp. 457–470 (2016) LINK
Yeon-Gun Lee, Il-Woong Park, Dong Won Lee, Goon-Cherl Park, Eung-Soo Kim*, “Reduction of circulation power for helium-cooled fusion reactor blanket using additive CO2 gas,” Fusion Engineering and Design, vol. 100, pp. 436–442 (2015) LINK
Sin Kim, Yeon-Gun Lee, Dong-Wook Jerng*, “Laminar film condensation of saturated vapor on an isothermal vertical cylinder,” International Journal of Heat and Mass Transfer, vol. 83, pp. 545–551 (2015) LINK
Min Seok Ko, Bo An Lee, Woo Youn Won, Yeon-Gun Lee, Dong Wook Jerng, Sin Kim*, “An improved electrical-conductance sensor for void-fraction measurement in a horizontal pipe,” Nuclear Engineering and Technology, vol. 47, no. 7, pp. 804–813 (2015) LINK
Anil Kumar Khambampati, Yeon-Gun Lee, Kyung Youn Kim, Dong Wook Jerng, Sin Kim*, “A meshless improved boundary distributed source method for two-phase flow monitoring using electrical resistance tomography,” Engineering Analysis with Boundary Elements, vol. 52, pp. 1–15 (2015) LINK
Anil Kumar Khambampati, Rong Li Wang, Bong Seok Kim, Kyung Youn Kim, Yeon-Gun Lee, Sin Kim*, “A mesh-less method to solve electrical resistance tomography forward problem using singular boundary distributed source method,” Flow Measurement and Instrumentation, vol. 46, pp. 303–311 (2015) LINK
Yeon-Gun Lee*, Goon-Cherl Park, “Assessment of TAPINS and TASS/SMR codes and application to overpower transients in REX-10,” Nuclear Engineering and Design, vol. 263, pp. 296–307 (2013) LINK
Yeon-Gun Lee*, Goon-Cherl Park, “Assessment of TAPINS code for application to thermal-hydraulic analysis of an integral reactor, REX-10,” Journal of Nuclear Science and Technology, vol. 50, no. 9, pp. 924–941 (2013) LINK
Yeon-Gun Lee*, Goon-Cherl Park, “TAPINS: A thermal-hydraulic system code for transient analysis of a fully-passive integral PWR,” Nuclear Engineering and Technology, vol. 45, no. 4, pp. 439–458 (2013) LINK
Yeon-Gun Lee*, Il-Woong Park, Goon-Cherl Park, “SBLOCA and LOFW experiments in a scaled-down IET facility of REX-10 reactor,” Nuclear Engineering and Technology, vol. 45, no. 3, pp. 347–360 (2013) LINK
Jin-Seok Hwang*, Yeon-Gun Lee, Goon-Cherl Park, “Characteristics of critical heat flux under rolling condition for flow boiling in vertical tube,” Nuclear Engineering and Design, vol. 252, pp. 153–162 (2012) LINK
Yeon-Gun Lee*, Jong-Won Kim, Goon-Cherl Park, “Development of a thermal-hydraulic system code, TAPINS, for 10 MW regional energy reactor,” Nuclear Engineering and Design, vol. 249, pp. 364–378 (2012) LINK
Jong-Won Kim*, Yeon-Gun Lee, Hyoung-Kyoun Ahn, Goon-Cherl Park, “Condensation heat transfer characteristic in the presence of noncondensable gas on natural convection at high pressure,” Nuclear Engineering and Design, vol. 239, no. 4, pp. 688–698 (2009) LINK
Domestic Journal Articles
(in Korean)
Han Sol Park, Donggun Son, Yeon-Gun Lee*, “Analysis of core degradation behavior and source term release in the PHEBUS FPT-1 experiment using MELCOR 2.2,” Journal of Energy Engineering, vol. 34, no. 1, pp. 94–106 (2025)
Sungbu Moon, Myung-Taek Hyun, Jaehyeok Heo, Dong-Won Lee, Yeon-Gun Lee*, “An evaluation of heating performance of the heat pump system using wasted heat from thermal effluent for greenhouse facilities in Jeju,” Journal of Energy Engineering, vol. 28, no. 1, pp. 22–29 (2019)
Yeon-Gun Lee, Jaehyeok Heo, Dong-Won Lee, Myung-Taek Hyun*, “Construction of the heat pump system using thermal effluents for greenhouse facilities in Jeju and evaluation of cooling performance,” Journal of Energy Engineering, vol. 27, no. 4, pp. 70–79 (2018)
Yeong-Jun Jang, Yeon-Gun Lee*, Sin Kim, Sang Gyu Lim, “Numerical study of the heat removal performance for a passive containment cooling system using MARS-KS with a new empirical correlation of steam condensation,” Journal of Energy Engineering, vol. 27, no. 4, pp. 27–35 (2018)
Yeon-Gun Lee, Yeong-Jun Jang, Dong-Jae Choi, Sin Kim*, “Experimental investigation of steam condensation heat transfer in the presence of noncondensable gas on a vertical tube,” Journal of Energy Engineering, vol. 24, no. 1, pp. 42–50 (2015)
GALLERY
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RESEARCH GALLERY
C O N T A C T U S
(02) 3408-1982
yglee@sejong.ac.kr
서울특별시 광진구 능동로 209 세종대학교 율곡관 307호