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Statements

Subject Item
n2:RIV%2F46356088%3A_____%2F09%3A%230000966%21RIV11-MPO-46356088
rdf:type
n9:Vysledek skos:Concept
dcterms: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.
dcterms: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
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
skos:notation
RIV/46356088:_____/09:#0000966!RIV11-MPO-46356088
n4:aktivita
n7:P
n4:aktivity
P(FT-TA3/071)
n4:cisloPeriodika
2009
n4:dodaniDat
n6:2011
n4:domaciTvurceVysledku
n12:7450060
n4:druhVysledku
n10:J
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n8:predkladatel
n4:idSjednocenehoVysledku
302771
n4:idVysledku
RIV/46356088:_____/09:#0000966
n4:jazykVysledku
n13:eng
n4:klicovaSlova
computational fluid dynamics; validation; Pressurized Thermal Shock; experiments
n4:klicoveSlovo
n5:computational%20fluid%20dynamics n5:Pressurized%20Thermal%20Shock n5:validation n5:experiments
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[A287722C5F25]
n4:nazevZdroje
Science and Technology of Nuclear Installations
n4:obor
n15:JB
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
15
n4:projekt
n17:FT-TA3%2F071
n4:rokUplatneniVysledku
n6:2009
n4:svazekPeriodika
2009
n4:tvurceVysledku
Macek, Jiří
s:issn
1687-6075
s:numberOfPages
13