In this work we propose a multiscale model for the evaluation of the temperature field in a nuclear assembly. In particular the zone where the coolant flows is represented as a three dimensional (3D) domain while the fuel rods are taken into account as one-dimensional (1D) inclusion. In this framework the 3D domain is not conformal with the complex fuel rod grid resulting in a small computational cost of the problem. An interesting aspect of this multiscale approach is, as we show in the numerical results section, that by a proper average of the solution we can retrieve the results obtained with the homogeneous model.

A computational 3D model for the multiscale analysis of nuclear reactors assembly

Manservisi S.;
2020

Abstract

In this work we propose a multiscale model for the evaluation of the temperature field in a nuclear assembly. In particular the zone where the coolant flows is represented as a three dimensional (3D) domain while the fuel rods are taken into account as one-dimensional (1D) inclusion. In this framework the 3D domain is not conformal with the complex fuel rod grid resulting in a small computational cost of the problem. An interesting aspect of this multiscale approach is, as we show in the numerical results section, that by a proper average of the solution we can retrieve the results obtained with the homogeneous model.
2020
Journal of Physics: Conference Series
1
8
Cerroni D.; Da Via R.; Manservisi S.; Zunino P.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/781053
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