ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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!
Latest Magazine Issues
Sep 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
October 2025
Nuclear Technology
September 2025
Fusion Science and Technology
Latest News
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.
Ronald D. Boyd
Fusion Science and Technology | Volume 67 | Number 4 | May 2015 | Pages 745-753
Technical Paper | doi.org/10.13182/FST14-813
Articles are hosted by Taylor and Francis Online.
A hypervapotron is an excellent candidate for single-side high heat flux removal (HHFR). Hypervapotron HHFR is accomplished by subcooled two-phase flow boiling and conjugate heat transfer involving efficient vapor generation, channeling, and condensation. To characterize additional optimal operating characteristics effectively using computational fluid dynamics (CFD) and/or experimental approaches (and/or design approaches), knowledge of the hypervapotron controlling parameters is essential for timely identification of enhancements to the HHFR configuration. To that end, three high heat flux–side controlling parameters and a characteristic temperature difference have been identified. These parameters include the effects of conjugate heat transfer, two-dimensional channel-wall dimensionless aspect ratios, and the characteristic temperature difference. Finally, these parameters may be useful in CFD (and experimental and/or design approaches) studies for optimizing HHFR and thermal protection in fusion and aerospace systems.