한국원자력학회:학술대회논문집 (Proceedings of the Korean Nuclear Society Conference)
- 한국원자력학회 1998년도 춘계학술발표회논문집(1)
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- Pages.635-640
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- 1998
Thermal Fluid Mixing Behavior during Medium Break LOCA in Evaluation of Pressurized Thermal Shock
- Jung, Jae-Won (Korea Institute of nuclear Safety) ;
- Bang, Young-Seok (Korea Institute of nuclear Safety) ;
- Seul, Kwang-Won (Korea Institute of nuclear Safety) ;
- Kim, Hho-Jung (Korea Institute of nuclear Safety)
- 발행 : 1998.05.01
초록
Thermal fluid mixing behavior during a postulated medium-size hot leg break loss of coolant accident is analyzed for the international comparative assessment study on pressurized thermal shock (PTS-ICAS) proposed by OECD-NEA. The applicability of RELAP5 code to analyze thermal fluid mixing behavior is evaluated through a simple modeling relevant to the problem constraints. Based on the calculation result, the onset of Thermal stratification is investigated using Theofanous's empirical correlation. Sensitivity calculations using a fine node model and crossflow model are also performed to evaluate the modeling capability on multi-dimensional characteristics related to thermal fluid mixing.
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