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Division Spotlight
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
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
Dragonfly, a Pu-fueled drone heading to Titan, gets key NASA approval
Curiosity landed on Mars sporting a radioisotope thermoelectric generator (RTG) in 2012, and a second NASA rover, Perseverance, landed in 2021. Both are still rolling across the red planet in the name of science. Another exploratory craft with a similar plutonium-238–fueled RTG but a very different mission—to fly between multiple test sites on Titan, Saturn’s largest moon—recently got one step closer to deployment.
On April 25, NASA and the Johns Hopkins University Applied Physics Laboratory (APL) announced that the Dragonfly mission to Saturn’s icy moon passed its critical design review. “Passing this mission milestone means that Dragonfly’s mission design, fabrication, integration, and test plans are all approved, and the mission can now turn its attention to the construction of the spacecraft itself,” according to NASA.
Yacine Aounallah, Paul Coddington
Nuclear Technology | Volume 128 | Number 2 | November 1999 | Pages 225-232
Technical Paper | RETRAN | doi.org/10.13182/NT99-A3027
Articles are hosted by Taylor and Francis Online.
A void fraction validation study is undertaken for the VIPRE-02 code due to the importance of void feedback when the code is coupled to the neutronic code ARROTTA in the new code package CORETRAN. This first stage is based on the steady-state boiling water reactor void fraction data obtained from the Nuclear Power Energy Corporation (Japan) experimental program.The code bundle-averaged void prediction is found to be adequate for the different assembly types studied, but at the subassembly level, the code underpredicts substantially the void for regions with low power-to-flow ratios. This is believed to be due to the lack of a lateral void drift model. The importance of these regional void underpredictions is negligible for the standard 8 x 8 assembly, but their impact on neutronics still needs assessing for the newer assembly types.
