Verification and validation of dynamic response simulation codes for BWR fuel assemblies under seismic loading

Yamada, Tomonori; Yoshimura, Shinobu; Koide, Yuuichi; Onitsuka, Shohei; Iijima, Tadashi

doi:10.1016/j.ijpvp.2018.10.005

Cited by 4 publications

(1 citation statement)

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“…Some extensive bibliography can be found addressing the topic of the dynamic response of the fuel elements, strictly for PWR or including other types of water‐cooled nuclear reactors. The author especially recommend Reference 1 for a comprehensive review of simulations codes dedicated to boiling water reactors under seismic loading, with a range of methods equally applicable to PWR context. Basically, it appears that a significant effort is brought to the modeling of the structures, either explicitly represented or seen as a homogeneous medium and to the expression of the loading brought by the surrounding fluid (see also for instance Reference 2 for advanced mechanics for CANDU reactors and Reference 3 for an example of large‐scale CFD simulations to compute hydraulic forces for PWR assemblies).…”

Section: Introductionmentioning

confidence: 99%

Numerical implementation and validation of a porous approach for fluid–structure interaction applied to pressurized water reactors fuel assemblies under axial water flow and dynamic excitation

Faucher

Ricciardi

Boccaccio

et al. 2021

Numerical Meth Engineering

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The proposed contribution is dedicated to numerical methods for solving strongly coupled fluid–structure dynamic problems where the complexity of the structures and the reduced remaining fluid volume do not allow to handle their exact geometry. Porous approaches are preferred instead but it is mandatory to go beyond classical techniques to account for inertial and convective components of the flow, as explicitly required by the application of the methods to the dynamics of a set of pressurized water reactors fuel assemblies under axial flow and seismic‐like loading. A new computational framework is thus introduced with special care given to stability, robustness, and computational efficiency of the coupled solver. Comparisons with well‐chosen experimental results provide some valuable validation of the numerical methods and demonstrate the ability of the model to reproduce the hydraulic coupling between several fuel assemblies.

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Section: Introductionmentioning

confidence: 99%