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EnglishIn the frame of the application of a methodology for estimating the uncertainties in code calculations of nuclear reactor transient behaviour (UMAE = Uncertainty Methodology based on Accuracy Extrapolation), the problem of phenomena whose occurrence leads to “cliff edges” in the transient is encountered. In the present paper, after a short summary of the UMAE characteristics, a possible way to cope with the evaluation of uncertainty resulting from the occurrence of boundary-condition-driven bifurcation is proposed. To this aim, reference is made to specific transient condition measured in downscaled integral facilities.
| Titolo: | Boundary conditions and uncertainty evaluations in system thermalhydraulics |
| Autori interni: | |
| Anno del prodotto: | 1994 |
| Abstract: | In the frame of the application of a methodology for estimating the uncertainties in code calculations of nuclear reactor transient behaviour (UMAE = Uncertainty Methodology based on Accuracy Extrapolation), the problem of phenomena whose occurrence leads to “cliff edges” in the transient is encountered. In the present paper, after a short summary of the UMAE characteristics, a possible way to cope with the evaluation of uncertainty resulting from the occurrence of boundary-condition-driven bifurcation is proposed. To this aim, reference is made to specific transient condition measured in downscaled integral facilities. |
| Handle: | http://hdl.handle.net/11568/29752 |
| Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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