HELIOS: Angularly Dependent Collision Probabilities

Villarino, Eduardo; Stamm'ler, R.J.J.; Ferri, Antonio; Casal, Juan José

doi:10.13182/nse112-16

Cited by 109 publications

(32 citation statements)

References 6 publications

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“…Collision probabilities are computed in the square pincell geometry by the ray-tracing method. 10) In this study, 48 azimuthal directions and 0.02 cm ray separation (equidistant-ray tracing) are used to evaluate collision probabilities. The AEGIS code can generate the table of collision probabilities before the ultra-fine-group calculations.…”

Section: Collision Probability Methodsmentioning

confidence: 99%

Resonance Treatment Based on Ultra-fine-group Spectrum Calculation in the AEGIS Code

Sugimura¹,

Yamamoto

2007

J. Nucl. Sci. Technol.

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The resonance calculation method using the ultra-fine-group spectrum calculations in the AEGIS code is explained in detail. By a simple benchmark problem, it is verified that the effect of anisotropic scattering on effective cross-sections is not very large and the isotropic scattering source approximation is adequate in practical resonance calculations in LWRs. Furthermore, some efficient numerical algorithms in the ultra-fine-group calculations to reduce the computation time without large degeneration of accuracy are presented. In addition, the SPH method for energy collapsing of cross-sections is adopted in the AEGIS code to reduce the error of energy collapsing.Through the comparison with continuous-energy Monte-Calro calculation in the pin-cell geometry, the validity of the resonance treatment in the AEGIS code is verified.

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Section: Collision Probability Methodsmentioning

confidence: 99%

Resonance Treatment Based on Ultra-fine-group Spectrum Calculation in the AEGIS Code

Sugimura¹,

Yamamoto

2007

J. Nucl. Sci. Technol.

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“…capabilities and a transport solver, based on the collision probability method [46]. The benchmark configuration is transferred to a volume corrected 2D HELIOS model (see Figure 11).…”

Section: Modelling and Calculation Toolmentioning

confidence: 99%

On a Long Term Strategy for the Success of Nuclear Power

et al. 2017

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Abstract:The current generation of nuclear reactors are evolutionary in design, mostly based on the technology originally designed to power submarines, and dominated by light water reactors. The aims of the Generation IV consortium are driven by sustainability, safety and reliability, economics, and proliferation resistance. The aims are extended here to encompass the ultimate and universal vision for strategic development of energy production, the "perpetuum mobile"-at least as close as possible. We propose to rethink nuclear reactor design with the mission to develop an innovative system which uses no fresh resources and produces no fresh waste during operation as well as generates power safe and reliably in economic way. The results of the innovative simulations presented here demonstrate that, from a theoretical perspective, it is feasible to fulfil the mission through the direct reuse of spent nuclear fuel from currently operating reactors as the fuel for a proposed new reactor. The produced waste is less burdensome than current spent nuclear fuel which is used as feed to the system. However, safety, reliability and operational economics will need to be demonstrated to create the basis for the long term success of nuclear reactors as a major carbon free, sustainable, and applied highly reliable energy source.

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“…The HELIOS code is a 2D spectral code with wide unstructured mesh capabilities and a transport solver, based on the collision probability method [34]. The benchmark configuration is transferred to a volume corrected 2D HELIOS model (see Figure 11.…”

Section: Modelling and Calculation Toolmentioning

confidence: 99%

On a Long Term Strategy for the Success of Nuclear Power

Merk¹,

Litskevich²,

Whittle³

et al. 2017

Preprint

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Abstract:The current generation of nuclear reactors are evolutionary in design, mostly based on the technology originally designed to power submarines, and dominated by Light Water Reactors. The aims of the GenIV consortium are driven by sustainability, safety and reliability, economics, and proliferation resistance. The aims are extended here to encompass the ultimate and universal vision for strategic development of energy production, the 'perpetuum mobile' -at least as close as possible. We propose to rethink nuclear reactor design with the mission to develop a system which uses no fresh resources and produces no fresh waste during operation as well as generates power safe and reliably in economic way. The results of the innovative simulations presented here demonstrate that, from a theoretical perspective, it is feasible to fulfil the mission through the reuse of spent nuclear fuel from currently operating reactors as the fuel for a new reactor. The produced waste is less burdensome than current spent nuclear fuel which is used as feed to the system. However, safety, reliability and operational economics will need to be demonstrated to create the basis for the long term success of nuclear reactors as a major carbon free, sustainable, and applied highly reliable energy source.

show abstract

HELIOS: Angularly Dependent Collision Probabilities

Cited by 109 publications

References 6 publications

Resonance Treatment Based on Ultra-fine-group Spectrum Calculation in the AEGIS Code

Resonance Treatment Based on Ultra-fine-group Spectrum Calculation in the AEGIS Code

On a Long Term Strategy for the Success of Nuclear Power

On a Long Term Strategy for the Success of Nuclear Power

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