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Article Dans Une Revue Progress in Nuclear Energy Année : 2017

The multi-physics improved quasi-static method - Application to a neutronics-thermomechanics coupling

Cyril Patricot
Anne-Marie Baudron
  • Fonction : Auteur

Résumé

The quasi-static method is widely used for space- and time-dependent neutron transport problems. It is based on the factorization of the flux into the product of two functions, an “amplitude” depending only on time and a “shape” which depends on all variables. Thanks to this factorization, long time-steps can be used for the computation of the shape, leading to a substantial reduction of the calculation time. Two algorithms, based on the quasi-static factorization, can be found in the literature: the “Improved Quasi-static Method” (IQM), and the “Predictor-Corrector Quasi-static Method” (PCQM). In this paper we show, on the example of the Godiva experiment, that the IQM algorithm can be easily adapted to multi-physics simulations. Moreover, most of the common coupling or time-step control strategies are compatible with this algorithm and we test some of them here. In particular, a technique taken from existing codes with point-kinetic modules and based on feedback coefficients is found, in our case, to be especially efficient and gives precise and fast results. This shows that the multi-physics IQM presented in this paper is compatible with these existing codes, and may be a way to couple them with neutron transport solvers.
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Dates et versions

hal-03007066 , version 1 (16-11-2020)

Identifiants

Citer

Cyril Patricot, Anne-Marie Baudron, Olivier Fandeur. The multi-physics improved quasi-static method - Application to a neutronics-thermomechanics coupling. Progress in Nuclear Energy, 2017, 101, pp.352-359. ⟨10.1016/j.pnucene.2017.03.021⟩. ⟨hal-03007066⟩
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