Use of 3D-VAR and Kalman Filter Approaches for Neutronic State and Parameter Estimation in Nuclear Reactors

Autor: Sebastien Massart, Samuel Buis, Patrick Erhard, Guillaume Gacon

Publikováno v: Nuclear Science and Engineering. 155:409-424

In this paper, data assimilation (DA) techniques that have proven to be efficient in the fields of meteorological forecast and oceanography are applied to neutronics problems. Two applications, the techniques of which can be used to enhance optimizat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a5f9934fad068da0612773408a4ccb06
https://doi.org/10.13182/nse07-a2673

Variational assimilation for xenon dynamical forecasts in neutronic using advanced background error covariance matrix modelling

Autor: Olivier Thual, Bertrand Bouriquet, Jean-Philippe Argaud, Serge Gratton, Angélique Ponçot, Patrick Erhard

Publikováno v: Annals of Nuclear Energy
Annals of Nuclear Energy, Elsevier Masson, 2013, vol. 60, pp. 39-50. ⟨10.1016/j.anucene.2013.04.026⟩

International audience; Data assimilation method consists in combining all available pieces of information about a system to obtain optimal estimates of initial states. The different sources of information are weighted according to their accuracy by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac8cfd89f188d5c90310e653d8ede97f
https://oatao.univ-toulouse.fr/9086/

Differential influence of instruments in nuclear core activity evaluation by data assimilation

Autor: Sophie Ricci, Bertrand Bouriquet, Sebastien Massart, Patrick Erhard, Angélique Ponçot, Olivier Thual, Jean-Philippe Argaud

Publikováno v: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Elsevier, 2011, vol. 626-627, pp.97-104. ⟨10.1016/j.nima.2010.09.179⟩

The global neutronic activity fields of a nuclear core can be reconstructed using data assimilation. Indeed, data assimilation allows to combine both measurements from instruments and information from a model, to evaluate the best possible neutronic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28c9367a688a0026a167bc0d67e4c577
https://hal.archives-ouvertes.fr/hal-00803539

Robustness of nuclear core activity reconstruction by data assimilation

Autor: Patrick Erhard, Olivier Thual, Angélique Ponçot, Sophie Ricci, Bertrand Bouriquet, Sebastien Massart, Jean-Philippe Argaud

We apply a data assimilation techniques, inspired from meteorological applications, to perform an optimal reconstruction of the neutronic activity field in a nuclear core. Both measurements, and information coming from a numerical model, are used. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ee1922b5aa6ba5d75bb083ed7047e79

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