Open AccessRELAP5 model for advanced neutron source reactor thermal-hydraulic transients, three-element-core design
Author(s) -
N.C.J. Chen,
M.W. Wendel,
G.L. Yoder
Publication year - 1996
Language(s) - English
Resource type - Reports
DOI - 10.2172/256414
Subject(s) - coolant , piping , core (optical fiber) , inner core , axial symmetry , nuclear engineering , heat exchanger , pressure drop , thermal hydraulics , mechanics , offset (computer science) , nuclear reactor core , materials science , engineering , mechanical engineering , heat transfer , structural engineering , physics , computer science , composite material , programming language
In order to utilize reduced enrichment fuel, the three-element-core design has been proposed. The proposed core configuration consists of inner, middle, and outer elements, with the middle element offset axially beneath the inner and outer elements, which are axially aligned. The three-element-core RELAP5 model assumes that the reactor hardware is changed only within the core region, so that the loop piping, heat exchangers, and pumps remain as assumed for the two-element-core configuration. However, the total flow rate through the core is greater and the pressure drop across the core is less so that the primary coolant pumps and heat exchangers are operating at a different point in their performance curves. This report describes the new RELAP5 input for the core components