Numerical Analysis of the Influence of Side Slot and Fin Heights in a Hypervapotron Channel on Heat Transfer

Hypervapotron is a water-cooled device which relies on internal fins and boiling heat transfer to sustain ultra-high heat flux in the range of 20–30 MW/m 2 from thermonuclear fusion reactor. This study investigated the design optimization of hypervapotron cooling channels using multiphase computational fluid dynamic simulation. With focus on geometric variations in fin heights and side slots installed to the cooling channel, their effects on the cooling performance and internal flow pattern of these channels were evaluated. The obtained results revealed that the incorporation of side slots significantly enhanced cooling performance by promoting bidirectional fluid inflow and optimizing heat dissipation. It was also found that adjusting fin heights significantly contributed to improved thermal management by ensuring smoother liquid ingress and effective heat exchange. This work established a link between design variations and cooling performance, providing insights and guidelines for advanced engineering of hypervapotron systems.