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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Latest News
IAEA again raises global nuclear power projections
Noting recent momentum behind nuclear power, the International Atomic Energy Agency has revised up its projections for the expansion of nuclear power, estimating that global nuclear operational capacity will more than double by 2050—reaching 2.6 times the 2024 level—with small modular reactors expected to play a pivotal role in this high-case scenario.
IAEA director general Rafael Mariano Grossi announced the new projections, contained in the annual report Energy, Electricity, and Nuclear Power Estimates for the Period up to 2050 at the 69th IAEA General Conference in Vienna.
In the report’s high-case scenario, nuclear electrical generating capacity is projected to increase to from 377 GW at the end of 2024 to 992 GW by 2050. In a low-case scenario, capacity rises 50 percent, compared with 2024, to 561 GW. SMRs are projected to account for 24 percent of the new capacity added in the high case and for 5 percent in the low case.
Mingjun Wang, Tangtao Feng, Ping Song, Wenxi Tian, G. H. Su, Suizheng Qiu (Xi’an Jiaotong Univ)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 965-976
In this paper, the detailed thermal mixing characteristics of the two-phase stratified flow in a 45° T-junction were studied with complicated direct contact condensation. The feasibility of CFD model on the two phase mixing process was validated against the experimental data obtained from the XJTU-ECCS apparatus. Results show that the established two-phase CFD model can predict the mixing process correctly during the ECC safety injection with the matched grid, exact boundary conditions and a proper set of mathematical model. Moreover, with a comparison between the condensation rate and the experimental data under different Rt numbers, it was found that the error range of numerical results turned out to be lower than 28%. The condensation rate during the ECC injection was closely related to the Rt number, and the linearity degree between the condensation rate and Rt number was high when the cooling capacity of injection coolant was insufficient. This study summarized a fitting correlation according to simulation results, which can be used to predict the condensation rate in case that the Rt number is lower than 0.55.
