Investigation of flow instability using axially decreased power shape in parallel channels with water at supercritical pressure

摘要

Realizing the economic viability of SCWR, a GEN IV reactor, several research activities have been carried to address challenges associated with a system operated at supercritical pressures as a result of drastic changes in fluid properties at these supercritical pressures. These challenges include enhanced heat transfer EHT, deteriorated heat transfer HTD and flow instability among many others. The research activities mostly focused on CFD and experimental studies involving single tube due to the complexity of parallel channel flow and other non-circular flow geometries. Research in parallel channels is needed to address related supercritical heat transfer challenges and to provide more realistic information to the SCWR core design.