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정재훈(Jaehoon Jung),정석규(Seokgyu Jeong) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
During the late phase of severe accidents, the molten corium may be discharged into the reactor cavity if the lower head of the reactor vessel is failed. The cooling and stabilization of the discharged molten corium in the reactor cavity is important to prevent further accident progression such as molten core-concrete interaction. It is necessary to develop the rapid analysis module for the ex-vessel corium coolability. So, we are developing code of ex-vessel corium coolability analysis (COCCA). In COCCA, it needs to calculate the temperature distribution in the particulate debris bed, to understand the local phenomena and predict the local dryout. A simplified analysis model was developed to determine whether the temperature of particulate debris bed is stabilized. In this study, the simplified analysis model was improved based on the latest experiemtal results performed by KAERI. It was validated using the results of COOLOCE experiments performed by VTT.
정재훈(Jaehoon Jung),정석규(Seokgyu Jeong) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
During the late phase of severe accidents, the molten corium may be discharged into the reactor cavity if the lower head of the reactor vessel is failed. The cooling and stabilization of the discharged molten corium in the reactor cavity is important to prevent further accident progression such as molten core-concrete interaction. It is necessary to develop the rapid analysis module for the ex-vessel corium coolability. So, we are developing code of ex-vessel corium coolability analysis (COCCA). In COCCA, it needs to calculate the temperature distribution in the particulate debris bed, to understand the local phenomena and predict the local dryout. A simplified analysis model was developed to determine whether the temperature of particulate debris bed is stabilized. In this study, the simplified analysis model was improved based on the latest experiemtal results performed by KAERI. It was validated using the results of COOLOCE experiments performed by VTT.
미립화 및 분무장치 1 : 가변추력 분사기의 형상변화에 따른 분사특성의 실험적 연구
이인규 ( Ingyu Lee ),정석규 ( Seokgyu Jung ),윤정수 ( Jungsoo Yoon ),박구정 ( Gujeong Park ),윤영빈 ( Youngbin Yoon ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
The spray characteristics of dual-manifold swirl injector was investigated with various geometry. In order to compare the characteristics, 5 types of injector was designed with various number of tangential entry. The spray characteristics was captured through backlight images and electrical conductance method was applied to investigate the film thickness at nozzle. Spray angle and film thickness were changed dramatically while throttling.