抄録
A new cooling concept of free surface flow is proposed as an alternative candidate for the first wall of the self-cooling molten-salt Flibe blanket in the helical-type fusion reactor FFHR. Numerical analyses on capillary flow show that a free surface balanced between surface tension and the forces of wall shear stress and gravity is feasible even in helical systems, where a spiral flow is formed and drastically enhances the heat transfer from the coolant channel wall.