About: An Overview of the Pressurized Thermal Shock Issue in the Context of the NURESIM Project

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About: An Overview of the Pressurized Thermal Shock Issue in the Context of the NURESIM Project Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Within the European Project NURESIM, the simulation of PTS is investigated. Some accident scenarios for Pressurized Water Reactors may cause Emergency Core Coolant injection into the cold leg leading to PTS situations. They imply the formation of temperature gradients in the thick vessel walls with consequent localized stresses and the potential for propagation of possible flaws in the material. This paper focuses on two-phase conditions that are potentially at the origin of PTS. It summarizes recent advances in the understanding of the two-phase phenomena occurring within the nuclear reactor. Available experimental data for validation of two-phase CFD simulation tools are reviewed and the capabilities of such tools to capture each basic phenomenon are discussed. Conclusions show that several two-phase flow phenomena are involved and can individually be simulated at least at a qualitative level, but the capability to simulate their interaction and the overall system performance is still limited. Within the European Project NURESIM, the simulation of PTS is investigated. Some accident scenarios for Pressurized Water Reactors may cause Emergency Core Coolant injection into the cold leg leading to PTS situations. They imply the formation of temperature gradients in the thick vessel walls with consequent localized stresses and the potential for propagation of possible flaws in the material. This paper focuses on two-phase conditions that are potentially at the origin of PTS. It summarizes recent advances in the understanding of the two-phase phenomena occurring within the nuclear reactor. Available experimental data for validation of two-phase CFD simulation tools are reviewed and the capabilities of such tools to capture each basic phenomenon are discussed. Conclusions show that several two-phase flow phenomena are involved and can individually be simulated at least at a qualitative level, but the capability to simulate their interaction and the overall system performance is still limited. (en)
Title	An Overview of the Pressurized Thermal Shock Issue in the Context of the NURESIM Project An Overview of the Pressurized Thermal Shock Issue in the Context of the NURESIM Project (en)
skos:prefLabel	An Overview of the Pressurized Thermal Shock Issue in the Context of the NURESIM Project An Overview of the Pressurized Thermal Shock Issue in the Context of the NURESIM Project (en)
skos:notation	RIV/46356088:_____/09:#0000966!RIV11-MPO-46356088
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(FT-TA3/071)
http://linked.open...iv/cisloPeriodika	2009
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Macek, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	ÚJV Řež, a. s.
http://linked.open...dnocenehoVysledku	302771
http://linked.open...ai/riv/idVysledku	RIV/46356088:_____/09:#0000966
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	computational fluid dynamics; validation; Pressurized Thermal Shock; experiments (en)
http://linked.open.../riv/klicoveSlovo	experiments Pressurized Thermal Shock computational fluid dynamics validation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[A287722C5F25]
http://linked.open...i/riv/nazevZdroje	Science and Technology of Nuclear Installations
http://linked.open...in/vavai/riv/obor	JB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	15 (xsd:int)
http://linked.open...vavai/riv/projekt	Safety aspects of advanced nuclear reactors.
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	2009
http://linked.open...iv/tvurceVysledku	Macek, Jiří
issn	1687-6075
number of pages	13 (xsd:int)

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