Preliminary study on the thermal-mechanical performance of the U3Si2/Al dispersion fuel plate under normal conditions

Yang, Guangliang; Liao, Haiyan; Ding, Tao; Chen, Hongli

doi:10.1016/j.net.2021.05.014

Cited by 6 publications

(1 citation statement)

References 25 publications

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“…Cui et al [ 16 ] improved Rest’s model by taking hydrostatic pressure and the resolution effect of intergranular gas atoms into account, and developed a semi-analytical formula to describe fission gas behavior in UMo fuels. There have been some simulation attempts to develop efficient and precise schemes for incorporating irradiation-induced swelling behavior into various nuclear fuels [ 17 , 18 , 19 ]. Cui’s model was first employed to simulate the in-pile behavior of UMo fuel plates that were monolithic or particle-dispersed [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Toward Elucidating the Influence of Hydrostatic Pressure Dependent Swelling Behavior in the CERCER Composite

2023

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A ceramic–ceramic (CERCER) fuel with minor actinide-enriched ceramic fuel particles dispersed in a MgO ceramic matrix is chosen as a promising composite target for accelerator-driven systems (ADS). Fission swelling is a complex irradiation-induced phenomenon that involves recrystallization, resolution, and hydrostatic pressure under extreme conditions of high temperature and significant fission flux. In this study, a multiscale computational framework was developed to integrate simulations of continuum-scale thermo-mechanical behavior in the CERCER composite with a grain-scale hydrostatic pressure-dependent fission gas swelling model. Hydrostatic pressure-dependent fission welling is taken into account in the stress update algorithms for UO2 particles. Accordingly, we programmed the user subroutines to define the thermo-mechanical constitutive relations in the finite element simulations. The obtained results indicate that (1) the proposed method accurately predicts the swelling deformation at various burnup levels while taking into account hydrostatic pressure and (2) prior to recrystallization, the particle swelling is primarily influenced by temperature variation, whereas after recrystallization, the presence of hydrostatic pressure favorably suppresses the swelling deformation. This work effectively captures the swelling behavior influenced by hydrostatic pressure within the dispersed-type CERCER composite fuel in ADSs.

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Section: Introductionmentioning

confidence: 99%

Toward Elucidating the Influence of Hydrostatic Pressure Dependent Swelling Behavior in the CERCER Composite

2023

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Study on the Steady-State Performance of the Fuel Rod in M2LFR-1000 Using KMC-Fueltra

Yang¹,

Wang²,

Feng³

et al. 2023

Springer Proceedings in Physics

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Operating conditions in the liquid metal fast reactor, like higher power density, higher temperature gradient, and higher burnup, are more severe to the fuel rod comparing to the light water reactor. The integrity and safety of the fuel rod is very essential to the reactor safety. In this study, the fuel rod designed for M2LFR-1000, which is a typical pool type lead cooled fast reactor, is evaluated using a fuel performance analysis code named KMC-Fueltra. Irradiation behaviors and material properties for the MOX fuel and T91 cladding are established and introduced into the code. The steady-state performance of the fuel rod is analyzed. Results concerning both fuel and cladding performance are discussed based on indicative design limits collected from the open literatures. This study is useful to improve the conceptual design of the M2LFR-1000.

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Investigation of plate fuel performance under reactivity initiated accidents with developed multi-dimensional coupled method

Xiang

et al. 2023

Journal of Nuclear Materials

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Preliminary study on the thermal-mechanical performance of the U3Si2/Al dispersion fuel plate under normal conditions

Cited by 6 publications

References 25 publications

Toward Elucidating the Influence of Hydrostatic Pressure Dependent Swelling Behavior in the CERCER Composite

Toward Elucidating the Influence of Hydrostatic Pressure Dependent Swelling Behavior in the CERCER Composite

Study on the Steady-State Performance of the Fuel Rod in M2LFR-1000 Using KMC-Fueltra

Investigation of plate fuel performance under reactivity initiated accidents with developed multi-dimensional coupled method

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