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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
G. Le Coq, J. Lewi, P. Raymond
Nuclear Science and Engineering | Volume 81 | Number 1 | May 1982 | Pages 1-8
Technical Paper | doi.org/10.13182/NSE82-A19590
Articles are hosted by Taylor and Francis Online.
The use of the one-dimensional two-phase flow six-equation model requires knowledge of mass, momentum, and energy transfers between the phases. These transfers can be expressed from the flow parameters and their derivatives. The first part of this paper is devoted to the formulation of the entropy production at the interface as a function of the velocity, Gibbs potential and temperature of each phase. It is assumed that each transfer can be expressed in the form where R is the reversible part and δR the irreversible part of the transfer R. The linear theory of irreversible thermodynamics allows the formulation of δR. The expression of R may include differential terms. In the second part of this paper, we show how to write interfacial transfer terms to reduce the six-equation model into a lower order model. The last part of this paper presents an original method for computing critical flow, taking into account the flow blockage phenomenon, which is observed when variations of downstream conditions do not produce any significant effect on the upstream flow, even though the fluid velocity is less than the sound velocity.