The Development of SIMMER-III, An Advanced Computer Program for LMFR Safety Analysis, and Its Application to Sodium Experiments

Tobita, Yoshiharu; Kondo, Sa.; Yamano, Hidemasa; Morita, Koji; Maschek, W.; Coste, Pierre; Cadiou, Thierry

doi:10.13182/nt06-2

Cited by 82 publications

(21 citation statements)

References 5 publications

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“…(Re g ) 0.527 (13) In a similar way, a predictive function for K 4 is obtained with correlation coefficient of 0.952:…”

Section: Results Of Analysismentioning

confidence: 96%

“…Therefore, although further analyses and verifications, e.g. those investigating the interpolation/extrapolation capability of the proposed scheme (especially Equations (13) and (14)), might be needed, to some extent the potential extension capability of our base model to predict the debris bed self-leveling behavior at more realistic bed conditions has been displayed.…”

Section: Results Of Analysismentioning

confidence: 99%

“…For instance, SIMMER-III, an advanced fast reactor safety analysis code [13], is currently being developed by incorporating several computer models treating the particle-particle and particlebubble interactions (e.g. the discrete element method) [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

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An investigation on debris bed self-leveling behavior with non-spherical particles

Cheng

Tagami

Yamano

et al. 2014

Journal of Nuclear Science and Technology

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Studies on debris bed self-leveling behavior with non-spherical particles are crucial in the assessment of actual leveling behavior that could occur in core disruptive accident of sodium-cooled fast reactors. Although in our previous publications, a simple empirical model (based model), with its wide applicability confirmed over various experimental conditions, has been successfully advanced to predict the transient leveling behavior, up until now this model is restricted to calculations of debris bed of spherical particles. Focusing on this aspect, in this study a series of experiments using non-spherical particles was performed within a recently developed comparatively larger scale experimental facility. Based on the knowledge and data obtained, an extension scheme was suggested with the intention to extend the base model to cover the particle-shape influence. The proposed scheme principally consists of two parts -with one part for correcting the terminal velocity of a single non-spherical particle, which is the key parameter in our base model, and the other for representing the additional particle-particle interactions caused by the shaperelated parameters. Through detailed analyses, it is found that by coupling this scheme, good agreement between experimental and predicted results can be achieved for both spherical and non-spherical particles given current range of experimental conditions.

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“…(Re g ) 0.527 (13) In a similar way, a predictive function for K 4 is obtained with correlation coefficient of 0.952:…”

Section: Results Of Analysismentioning

confidence: 96%

Section: Results Of Analysismentioning

confidence: 99%

See 1 more Smart Citation

An investigation on debris bed self-leveling behavior with non-spherical particles

Cheng

Tagami

Yamano

et al. 2014

Journal of Nuclear Science and Technology

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“…A sometimes massive heterogeneity in space and energy and the mutual interactions between the neutron and temperature fields claim for new and enlarged 3D capabilities, and an increased coupling for design and normal operation calculations. Integrated systems permitting a full description of coupled neutronics, thermal and mechanical transients, such as the SIMMER III/IV code (Tobita et al, 2006), should be very useful for safety studies of strongly coupled, fast-kinetics systems, such as SFR and GFR systems. On the other hand, for HTR and VHTR systems, due to the strong dependence of the core equilibrium on the temperatures, focus should be put on bulk codes enabling a full coupling among the core and the reflector temperature and neutron fields.…”

Section: Reactor Physics and Core Designmentioning

confidence: 99%

Advanced Numerical Simulation for the Safety Demonstration of Nuclear Power Plants

Bruna¹,

Micaelli²,

Couturier³

et al. 2011

Numerical Simulations - Applications, Examples and Theory

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“…The material properties are prepared by converting the existing library in the SIMMER-III code. 59) Lacking properties for eutectic reactions of the metal fuel are provided from the phase diagram made by the Calculation of Phase Diagram (CALPHAD) and by classical and first-principles molecular dynamics. Separated phenomena in CDAs are focused on, namely, (1) failure of fuel pins, (2) dispersion and freezing of molten core, (3) boiling of molten core pool, (4) failure of duct walls, (5) dynamic behavior of low-energy disruptive core, (6) relocation of molten core, and (7) debris coolability.…”

Section: Safety Analysismentioning

confidence: 99%

Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer

Koshizuka

2011

J. Nucl. Sci. Technol.

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The Moving Particle Semi-implicit (MPS) method is one of the particle methods in which continuum mechanics is analyzed using the concept of particles. Since meshes are not used, large deformation of free surfaces and material interfaces can be simulated without the problems of mesh distortion. Thus, the MPS method has been applied to multiphase flow analysis in nuclear engineering. The advantages of the particle methods are also useful for applications in other engineering fields: ship engineering, civil engineering, microflow, biomechanics, visualization, etc. In this review, calculation examples are described and classified. Commercial codes have been released and applied in industries. The particle methods are also used in TV programs, movies, and computer games. Combinations of numerical techniques for multiphysics problems, fast calculations, and high-quality visualizations are expected to lead to real-time particle simulations for various new applications in the near future.

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The Development of SIMMER-III, An Advanced Computer Program for LMFR Safety Analysis, and Its Application to Sodium Experiments

Cited by 82 publications

References 5 publications

An investigation on debris bed self-leveling behavior with non-spherical particles

An investigation on debris bed self-leveling behavior with non-spherical particles

Advanced Numerical Simulation for the Safety Demonstration of Nuclear Power Plants

Current Achievements and Future Perspectives on Particle Simulation Technologies for Fluid Dynamics and Heat Transfer

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