Status and Challenges of Nuclear Thermal-Hydraulics Research in China

摘要

Nuclear energy has been considered as an important part in the medium- and long term Chinese energy mixing. Accompanying with the nuclear power development program extensive R&D program was initiated. Nuclear thermal-hydraulics has been recognized as a key subject in the nuclear technology development, because the target of nuclear thermal-hydraulics is to remove heat safely from the fuel. The thermal-hydraulic activities in China cover mainly three areas, i.e. reactor core thermal-hydraulics, safety related thermal-hydraulics and fundamental thermal-hydraulics. This paper gives a brief summary of the ongoing R&D activities in these three areas. Focuses are put on a few selected topics, i.e. (a) transversal mixing and non-uniform heat transfer distribution in fuel assemblies, (b) two-phase distribution at ERVC conditions, (c) heat transfer of supercritical fluids. The state-of-the-art of the ongoing works and the challenging aspects are presented and discussed.