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Journal Articles Journal of Fluids and Structures Year : 2016

Fluid-structure interaction modelling of a PWR fuel assembly subjected to axial flow

Abstract

Nuclear industry needs tools to design reactor cores in case of earthquake. A fluid-structure model simulating the response of the core to a seismic excitation have been developed. Full scale tests considering one fuel assembly are performed to identify coefficients (added mass and damping) that will be used as inputs in the models. Tests showed that the axial water flow induced an added stiffness. In the paper, an expression of the model accounting for the fluid in the fuel assembly with a porous media model and in the bypasses with a leakage flow model is developed. Numerical simulations are compared to experiments and showed good agreement.
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Dates and versions

cea-02384447 , version 1 (28-11-2019)

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Guillaume Ricciardi. Fluid-structure interaction modelling of a PWR fuel assembly subjected to axial flow. Journal of Fluids and Structures, 2016, 62, pp.156-171. ⟨10.1016/j.jfluidstructs.2016.01.006⟩. ⟨cea-02384447⟩
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