Host: The Japan Society of Mechanical Engineers
Name : The 30th International Conference on Nuclear Engineering (ICONE30)
Date : May 21, 2023 - May 26, 2023
Most fluid flow in nuclear reactors is chaotic or turbulent because of high-temperature operations. And forced convection plays a leading role in normal operating conditions. Whereas natural convection becomes an important role when circulating pumps or fans fail. To deeply understand the natural convection phenomenon, studies of the phenomenon with simple geometries are prevalently devoted by many researchers. Also, this paper aims to investigate and report the flow properties of chaotic natural convection occurring in a square cavity. The investigation is performed by direct numerical simulation (DNS). The flow properties are focused on the chaotic flow patterns and overall heat transfer through the cavity at the Rayleigh number of 1010. The instantaneous and statistical results of the DNS are exhibited and compared with each other. Furthermore, the results are wished as a part of databases for validating new codes simulating chaotic flows.
