Advanced natural circulation reduced order model with inclined channel for low pressure conditions

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Abstract

Natural circulation with two-phase flow is a nonlinear dynamical systems, which can show a very complex and strange behavior under specific conditions. The application of stability analysis requires a large computational effort and is cumbersome in case of prediction the dynamical behavior by system codes alone. Therefore, model order reduction techniques are used to compensate this disadvantage by coupling with a bifurcation code such as MatCont. A reduced order model is derived by employing the POD-method to analyze the stability landscape of a low pressure natural circulation system representing passive safety systems such as the containment cooling condenser. The required full order model contains a classical natural circulation loop with a heated section and a riser. The two-phase region is modeled by a drift-flux mixture model. The reliability of the FOM is investigated by comparison with a reference model by the validated system code ATHLET.

Details

Original languageEnglish
Title of host publication2018 26th International Conference on Nuclear Engineering
PublisherThe American Society of Mechanical Engineers(ASME)
Number of pages8
Volume6A
ISBN (electronic)9780791851487
Publication statusPublished - 2018
Peer-reviewedYes

Publication series

SeriesInternational Conference on Nuclear Engineering (ICONE)
VolumeA6

Conference

Title2018 26th International Conference on Nuclear Engineering
Abbreviated titleICONE26
Conference number26
Duration22 - 26 July 2018
Website
Degree of recognitionInternational event
LocationNovotel London West
CityLondon
CountryUnited Kingdom

Keywords

ASJC Scopus subject areas