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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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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.
J. H. McFadden, M. P. Paulsen, G. C. Gose
Nuclear Technology | Volume 54 | Number 3 | September 1981 | Pages 287-297
First International Retran Meeting | Heat Transfer and Fluid Flow | doi.org/10.13182/NT81-A32774
Articles are hosted by Taylor and Francis Online.
A time-dependent equation for the slip velocity in a two-phase flow condition has been incorporated into the RETRAN-02 computer code. This model addition was undertaken to remove a limitation in RETRAN-01 associated with the homogeneous equilibrium mixture model The dynamic slip equation was derived from a set of two-fluid conservation equations. The slip model and the flow-regime-dependent constitutive equations are used in the RETRAN steady-state initialization solution as well as for transient analyses. Comparisons of RETRAN calculations with steady-state and transient data indicate the slip model results in a better analysis of two-phase flow behavior than does the homogeneous equilibrium mixture model
