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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
M. S. Sadeghipour, M. N. Özişik, J. C. Mulligan
Nuclear Science and Engineering | Volume 79 | Number 1 | September 1981 | Pages 9-18
Technical Paper | doi.org/10.13182/NSE81-A19038
Articles are hosted by Taylor and Francis Online.
The transient freezing of liquid metals in laminar flow in the thermal entry region of a circular tube is investigated analytically under the assumption that the heat removal from the tube wall is by convection into an environment at a temperature lower than the freezing temperature. The variation of the solid-liquid interface as a function of time and position along the tube is determined. The effects of Biot number and the difference between the freezing and the ambient temperatures on the length of freeze-free zone are examined.
