한국원자력학회:학술대회논문집 (Proceedings of the Korean Nuclear Society Conference)
- 한국원자력학회 1996년도 춘계학술발표회논문집(2)
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- Pages.368-373
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- 1996
Improvement of Direct Contact Condensation Model of RELAP5/MOD3.1 for Passive High-Pressure Injection System
- Lee, Sang-Il (Korea Advanced Institute of Science and Technology) ;
- No, Hee-Cheon (Korea Advanced Institute of Science and Technology)
- 발행 : 1996.05.01
초록
A simple set of the transition criterion of the condensation regimes and the heat transfer coefficients on the direct contact condensation of the core makeup tank is developed, and implemented in RELAP5/MOD3.1 The condensation regimes are divided into two regimes: supply limit and condensation limit. In mode]ing the transition criterion between two regimes, a large-eddy model developed by Theofanous is used, and the empirical coefficient of the present large-eddy model is close to that of the large-eddy model. It turns out that the modified code better predicts the experimental data, especially the injection flow rate and the water level trend than the original code does.
키워드