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http://dx.doi.org/10.6112/kscfe.2014.19.1.064

ASSESSMENT OF MARS FOR DIRECT CONTACT CONDENSATION IN THE CORE MAKE-UP TANK  

Park, Keun Tae (Korea Atomic Energy Research Institute, Thermal Hydraulics Safety Research Division)
Park, Ik Kyu (Korea Atomic Energy Research Institute, Thermal Hydraulics Safety Research Division)
Lee, Seung Wook (Korea Atomic Energy Research Institute, Thermal Hydraulics Safety Research Division)
Park, Hyun Sik (Korea Atomic Energy Research Institute, Thermal Hydraulics Safety Research Division)
Publication Information
Journal of computational fluids engineering / v.19, no.1, 2014 , pp. 64-72 More about this Journal
Abstract
This study aimed at assessing the analysis capability of thermal-hydraulic computer code, MARS for the behaviors of the core make-up tank (CMT). The sensitivity study on the nodalization to simulate the CMT was conducted, and the MARS calculations were compared with KAIST experimental data and RELAP5/MOD3.3 calculations. The 12-node model was fixed through a nodalization study to investigate the effect of the number of nodes in the CMT (2-, 4-, 8-, 12-, 16-node). The sensitivity studies on various parameters, such as water subcooling of the CMT, steam pressure, and natural circulation flow were done. MARS calculations were reasonable in the injection time and the effects of several parameters on the CMT behaviors even though the mesh-dependency should be properly treated for reactor applications.
Keywords
MARS; Core Make-up Tank; Direct Contact Condensation; Thermal Stratification; Passive Safety Injection System;
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