Print Email Facebook Twitter Preliminary uncertainty and sensitivity analysis of the Molten Salt Fast Reactor steady-state using a Polynomial Chaos Expansion method Title Preliminary uncertainty and sensitivity analysis of the Molten Salt Fast Reactor steady-state using a Polynomial Chaos Expansion method Author Santanoceto, M. (TU Delft RST/Reactor Physics and Nuclear Materials; Politecnico di Torino) Tiberga, M. (TU Delft RST/Reactor Physics and Nuclear Materials) Perko, Z. (TU Delft RST/Reactor Physics and Nuclear Materials) Dulla, Sandra (Politecnico di Torino) Lathouwers, D. (TU Delft RST/Reactor Physics and Nuclear Materials) Date 2021 Abstract In this work, we present the results of a preliminary uncertainty quantification and sensitivity analysis study of the Molten Salt Fast Reactor (MSFR) behavior at steady-state performed by applying a non-intrusive Polynomial Chaos Expansion (PCE) approach. An in-house high-fidelity multi-physics simulation tool is used as reactor reference model. Considering several thermal-hydraulics and neutronics parameters as stochastic inputs, with a limited number of samples we build a PCE meta-model able to reproduce he reactor response in terms of effective multiplication factor, maximum, minimum, and average salt temperatures, and complete salt temperature distribution. The probability density functions of the responses are constructed and analyzed, highlighting strengths and issues of the current MSFR design. The sensitivity study highlights the relative importance of each input parameter, thus providing useful indications for future research efforts. The analysis on the whole temperature field shows that the heat exchanger can be a critical component, so its design requires particular care. Subject Molten Salt Fast ReactorMulti-physicsNon-intrusivePolynomial Chaos ExpansionSensitivity analysisUncertainty quantification To reference this document use: http://resolver.tudelft.nl/uuid:b310b44e-09e7-40a4-8981-2cd1dc407d89 DOI https://doi.org/10.1016/j.anucene.2021.108311 ISSN 0306-4549 Source Annals of Nuclear Energy, 159 Part of collection Institutional Repository Document type journal article Rights © 2021 M. Santanoceto, M. Tiberga, Z. Perko, Sandra Dulla, D. Lathouwers Files PDF 1_s2.0_S0306454921001870_main.pdf 2.54 MB Close viewer /islandora/object/uuid:b310b44e-09e7-40a4-8981-2cd1dc407d89/datastream/OBJ/view