Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility

Pei Shen; Wenzhong Zhou

doi:10.1115/ICONE26-81818

Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility

Department of Mechanical Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

Steam explosion is one of the consequences of fuel-coolant interactions in a severe accident. Melt jet fragmentation, which is the key phenomenon during steam explosion, has not been clarified sufficiently which prevents the precise prediction of steam explosion. The focus of this paper is on the numerical simulation of the melt jet behavior falling into a coolant pool in order to get a qualitative and quantitative understanding of initial premixing stage of fuel-coolant interaction. The objective of our first phase is the simulation of the fragmentation process and the estimation of the jet breakup length. A commercial CFD code COMSOL is used for the 2D numerical analysis employing the phase field method. The simulation condition is similar to our steam explosion test supported by the ALISA (Access to Large Infrastructure for Severe Accidents) project between European Union and China, and carried out in the KROTOS test facility at CEA, France. The simulation result is in relatively good agreement with the experimental data. Then the effect of the initial jet velocity, the jet diameter and the instability theory are presented. The preliminary data of melt jet fragmentation is helpful to understand the premixing stage of the fuel-coolant interaction.

Original language	English
Title of host publication	Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26)
Publisher	American Society of Mechanical Engineers
Volume	8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance)
ISBN (Print)	9780791851524
DOIs	https://doi.org/10.1115/ICONE26-81818
Publication status	Published - Jul 2018
Event	26th ICONE – International Conference on Nuclear Engineering (ICONE 2018) - Novotel London West, London, United Kingdom Duration: 22 Jul 2018 → 26 Jul 2018 https://www.asme.org/events/icone2018?_ga=2.119636360.1445334664.1545289923-476563826.1545289923

Publication series

Name	International Conference on Nuclear Engineering
Number	ICONE26-81818
Volume	2018

Conference

Conference	26th ICONE – International Conference on Nuclear Engineering (ICONE 2018)
Abbreviated title	ICONE 2018
Place	United Kingdom
City	London
Period	22/07/18 → 26/07/18
Internet address	https://www.asme.org/events/icone2018?_ga=2.119636360.1445334664.1545289923-476563826.1545289923

Bibliographical note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Research Keywords

Fuels
Computer simulation
Coolants
Test facilities

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10.1115/ICONE26-81818

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Shen, P., & Zhou, W. (2018). Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility. In Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26) (Vol. 8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance)). Article V008T09A028 (International Conference on Nuclear Engineering; Vol. 2018, No. ICONE26-81818). American Society of Mechanical Engineers. https://doi.org/10.1115/ICONE26-81818

Shen, Pei ; Zhou, Wenzhong. / Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility. Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26). Vol. 8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance) American Society of Mechanical Engineers, 2018. (International Conference on Nuclear Engineering; ICONE26-81818).

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title = "Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility",

abstract = "Steam explosion is one of the consequences of fuel-coolant interactions in a severe accident. Melt jet fragmentation, which is the key phenomenon during steam explosion, has not been clarified sufficiently which prevents the precise prediction of steam explosion. The focus of this paper is on the numerical simulation of the melt jet behavior falling into a coolant pool in order to get a qualitative and quantitative understanding of initial premixing stage of fuel-coolant interaction. The objective of our first phase is the simulation of the fragmentation process and the estimation of the jet breakup length. A commercial CFD code COMSOL is used for the 2D numerical analysis employing the phase field method. The simulation condition is similar to our steam explosion test supported by the ALISA (Access to Large Infrastructure for Severe Accidents) project between European Union and China, and carried out in the KROTOS test facility at CEA, France. The simulation result is in relatively good agreement with the experimental data. Then the effect of the initial jet velocity, the jet diameter and the instability theory are presented. The preliminary data of melt jet fragmentation is helpful to understand the premixing stage of the fuel-coolant interaction.",

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Shen, P & Zhou, W 2018, Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility. in Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26). vol. 8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance), V008T09A028, International Conference on Nuclear Engineering, no. ICONE26-81818, vol. 2018, American Society of Mechanical Engineers, 26th ICONE – International Conference on Nuclear Engineering (ICONE 2018), London, United Kingdom, 22/07/18. https://doi.org/10.1115/ICONE26-81818

Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility. / Shen, Pei ; Zhou, Wenzhong.
Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26). Vol. 8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance) American Society of Mechanical Engineers, 2018. V008T09A028 (International Conference on Nuclear Engineering; Vol. 2018, No. ICONE26-81818).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility

AU - Shen, Pei

AU - Zhou, Wenzhong

N1 - Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

PY - 2018/7

Y1 - 2018/7

N2 - Steam explosion is one of the consequences of fuel-coolant interactions in a severe accident. Melt jet fragmentation, which is the key phenomenon during steam explosion, has not been clarified sufficiently which prevents the precise prediction of steam explosion. The focus of this paper is on the numerical simulation of the melt jet behavior falling into a coolant pool in order to get a qualitative and quantitative understanding of initial premixing stage of fuel-coolant interaction. The objective of our first phase is the simulation of the fragmentation process and the estimation of the jet breakup length. A commercial CFD code COMSOL is used for the 2D numerical analysis employing the phase field method. The simulation condition is similar to our steam explosion test supported by the ALISA (Access to Large Infrastructure for Severe Accidents) project between European Union and China, and carried out in the KROTOS test facility at CEA, France. The simulation result is in relatively good agreement with the experimental data. Then the effect of the initial jet velocity, the jet diameter and the instability theory are presented. The preliminary data of melt jet fragmentation is helpful to understand the premixing stage of the fuel-coolant interaction.

AB - Steam explosion is one of the consequences of fuel-coolant interactions in a severe accident. Melt jet fragmentation, which is the key phenomenon during steam explosion, has not been clarified sufficiently which prevents the precise prediction of steam explosion. The focus of this paper is on the numerical simulation of the melt jet behavior falling into a coolant pool in order to get a qualitative and quantitative understanding of initial premixing stage of fuel-coolant interaction. The objective of our first phase is the simulation of the fragmentation process and the estimation of the jet breakup length. A commercial CFD code COMSOL is used for the 2D numerical analysis employing the phase field method. The simulation condition is similar to our steam explosion test supported by the ALISA (Access to Large Infrastructure for Severe Accidents) project between European Union and China, and carried out in the KROTOS test facility at CEA, France. The simulation result is in relatively good agreement with the experimental data. Then the effect of the initial jet velocity, the jet diameter and the instability theory are presented. The preliminary data of melt jet fragmentation is helpful to understand the premixing stage of the fuel-coolant interaction.

KW - Fuels

KW - Computer simulation

KW - Coolants

KW - Test facilities

UR - https://www.scopus.com/pages/publications/85056354432

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85056354432&origin=recordpage

U2 - 10.1115/ICONE26-81818

DO - 10.1115/ICONE26-81818

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9780791851524

VL - 8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance)

T3 - International Conference on Nuclear Engineering

BT - Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26)

PB - American Society of Mechanical Engineers

T2 - 26th ICONE – International Conference on Nuclear Engineering (ICONE 2018)

Y2 - 22 July 2018 through 26 July 2018

ER -

Shen P , Zhou W. Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility. In Proceedings of the 26th International Conference on Nuclear Engineering (ICONE26). Vol. 8 (Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance). American Society of Mechanical Engineers. 2018. V008T09A028. (International Conference on Nuclear Engineering; ICONE26-81818). doi: 10.1115/ICONE26-81818

Numerical simulation of corium jet breakup during fuel-coolant interaction based on the ALISA test performed at KROTOS test facility

Abstract

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