Hydraulic analysis of the water-cooled blanket based on the sub-critical water condition

Abstract The hydraulic simulation of the water-cooled blanket module based on Fluent code is reported. This study focused on heat transfer and the pressure drop under the sub-critical water condition. The temperature field distribution is discussed with the solid zones (breeder, multiplier and F82H material) and the coolants. The peak temperature of beryllium zones reaches about 600 °C and most of the breeder zones (Li 4 SiO 4 , Li 4 SiO 4 /Be 12 Ti) would be nearly 900 °C, which meets the thermal design requirements of the blanket material. For the Δ P (pressure drop), the piping circuit assumes most of the Δ P (72.68%) comparing to the other two, the FW (first wall) channel (23.96%) and the header (3.36%), and the total Δ P of blanket cooling system would be under 0.5 MPa which could be satisfied with the design guideline. In addition, by comparing on Δ P between the simulation and the empirical results, it is confirmed the empirical rules of Δ P could be applied to estimate the preliminary values of Δ P on relevant cooling structure.