Modeling of PANDA isolation condenser experiments with MELCOR and Apros

Tuomo Sevón; Seppo Hillberg

doi:10.1016/j.anucene.2019.107014

Modeling of PANDA isolation condenser experiments with MELCOR and Apros

Tuomo Sevón (Corresponding Author), Seppo Hillberg

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

Modeling methods were developed for passive cooling systems, in which steam condenses in vertical tubes. Isolation condenser experiments performed in the PANDA facility were calculated with two computer codes: the severe accident code MELCOR, and the process simulation software Apros. Both pure steam tests and tests with steam–non-condensable gas mixtures were calculated. Recommendations are given for MELCOR users regarding an appropriate nodalization, flow path definition, and heat transfer parameters. With proper model parameters and nodalization, both MELCOR and Apros codes are able to calculate the operation of the passive cooling system well.

Original language	English
Article number	107014
Journal	Annals of Nuclear Energy
Volume	136
DOIs	https://doi.org/10.1016/j.anucene.2019.107014
Publication status	Published - Feb 2020
MoE publication type	A1 Journal article-refereed

Keywords

Apros
Condensation
MELCOR
Passive nuclear safety

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10.1016/j.anucene.2019.107014

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title = "Modeling of PANDA isolation condenser experiments with MELCOR and Apros",

abstract = "Modeling methods were developed for passive cooling systems, in which steam condenses in vertical tubes. Isolation condenser experiments performed in the PANDA facility were calculated with two computer codes: the severe accident code MELCOR, and the process simulation software Apros. Both pure steam tests and tests with steam–non-condensable gas mixtures were calculated. Recommendations are given for MELCOR users regarding an appropriate nodalization, flow path definition, and heat transfer parameters. With proper model parameters and nodalization, both MELCOR and Apros codes are able to calculate the operation of the passive cooling system well.",

keywords = "Apros, Condensation, MELCOR, Passive nuclear safety",

author = "Tuomo Sev{\'o}n and Seppo Hillberg",

note = "Funding Information: The work was funded by SAFIR2014 and SAFIR2018, the Finnish research programs on nuclear power plant safety. Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

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AU - Sevón, Tuomo

AU - Hillberg, Seppo

N1 - Funding Information: The work was funded by SAFIR2014 and SAFIR2018, the Finnish research programs on nuclear power plant safety. Publisher Copyright: © 2019 Elsevier Ltd Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

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N2 - Modeling methods were developed for passive cooling systems, in which steam condenses in vertical tubes. Isolation condenser experiments performed in the PANDA facility were calculated with two computer codes: the severe accident code MELCOR, and the process simulation software Apros. Both pure steam tests and tests with steam–non-condensable gas mixtures were calculated. Recommendations are given for MELCOR users regarding an appropriate nodalization, flow path definition, and heat transfer parameters. With proper model parameters and nodalization, both MELCOR and Apros codes are able to calculate the operation of the passive cooling system well.

AB - Modeling methods were developed for passive cooling systems, in which steam condenses in vertical tubes. Isolation condenser experiments performed in the PANDA facility were calculated with two computer codes: the severe accident code MELCOR, and the process simulation software Apros. Both pure steam tests and tests with steam–non-condensable gas mixtures were calculated. Recommendations are given for MELCOR users regarding an appropriate nodalization, flow path definition, and heat transfer parameters. With proper model parameters and nodalization, both MELCOR and Apros codes are able to calculate the operation of the passive cooling system well.

KW - Apros

KW - Condensation

KW - MELCOR

KW - Passive nuclear safety

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JO - Annals of Nuclear Energy

JF - Annals of Nuclear Energy

SN - 0306-4549

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ER -

Modeling of PANDA isolation condenser experiments with MELCOR and Apros

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