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The Uranie platform: an open-source software for optimisation, meta-modelling and uncertainty analysis

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This paper introduces the Uranie platform, an open-source framework developed at the Alternative Energies and Atomic Energy Commission (CEA), in the nuclear energy division, in order to deal with uncertainty propagation, surrogate models, optimisation issues, code calibration, etc. | The Uranie platform an open-source software for optimisation meta-modelling and uncertainty analysis EPJ Nuclear Sci. Technol. 5 4 2019 Nuclear Sciences J.-B. Blanchard et al. published by EDP Sciences 2019 amp Technologies https doi.org 10.1051 epjn 2018050 Available online at https www.epj-n.org REGULAR ARTICLE The Uranie platform an open-source software for optimisation meta-modelling and uncertainty analysis Jean-Baptiste Blanchard Guillaume Damblin Jean-Marc Martinez Gilles Arnaud and Fabrice Gaudier Den-Service de thermo-hydraulique et de mécanique des fluides STMF CEA Université Paris-Saclay 91191 Gif-sur-Yvette France Received 26 June 2018 Received in final form 27 November 2018 Accepted 6 December 2018 Abstract. The high-performance computing resources and the constant improvement of both numerical simulation accuracy and the experimental measurements with which they are confronted bring a new compulsory step to strengthen the credence given to the simulation results uncertainty quantification. This can have different meanings according to the requested goals rank uncertainty sources reduce them estimate precisely a critical threshold or an optimal working point and it could request mathematical methods with greater or lesser complexity. This paper introduces the Uranie platform an open-source framework developed at the Alternative Energies and Atomic Energy Commission CEA in the nuclear energy division in order to deal with uncertainty propagation surrogate models optimisation issues code calibration etc. This platform benefits from both its dependencies and from personal developments to offer an efficient data handling model a C and Python interface advanced graphi graphical tools several parallelisation solutions etc. These methods can then be applied to many kinds of code considered as black boxes by Uranie so to many fields of physics as well. In this paper the example of thermal exchange between a plate-sheet and a fluid is introduced to show how Uranie .