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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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Fusion Science and Technology
February 2024
Latest News
Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
V. P. Pastukhov, N. V. Chudin
Fusion Science and Technology | Volume 59 | Number 1 | January 2011 | Pages 84-89
doi.org/10.13182/FST11-A11580
Articles are hosted by Taylor and Francis Online.
Low-frequency quasi-2D plasma convection and the resultant nondiffusive cross-field plasma transport in mirror-based systems are studied by means of direct computer simulations of nonlinear plasma dynamics in a frame of adiabatically reduced one-fluid MHD model. The simulations were performed for axisymmetric or effectively symmetrized paraxial mirror-based systems such as tandem mirror and gas dynamic traps. Various regimes of plasma confinement with sheared plasma rotation were modeled and analyzed. Simulations have shown formation of large-scale flute-like stochastic vortex structures, which are similar to the vortex-like structures observed in GAMMA 10 and GDT experiments. It was shown that a controlled formation of high-vorticity layers allows one to prevent fast plasma degradation and to reduce considerably the nondiffusive cross-field plasma transport even in a presence of unstable pressure driven modes with a weak MHD drive. The effect results from an appreciable nonlinear modification of dominant vortex-like structures due to a competition between pressure driven and Kelvin-Helmholtz instabilities.