CFD modelling of condensation of vapour in the pressurized PPOOLEX facility

Timo Pättikangas, Jarto Niemi, Jani Laine, Markku Puustinen, Heikki Purhonen

Research output: Contribution to conferenceConference articleScientificpeer-review

Abstract

The behaviour of a pressure suppression containment is studied experimentally and by performing CFD calculations. The experiments have been performed with the PPOOLEX test facility, which is a scaled-down two-compartment model of a pressure suppression containment of a BWR. In the experiments, vapour is blown into the drywell compartment initially filled with air. When the pressure increases, the mixture of air and vapour flows through the vent pipe into the water pool of the wetwell compartment.
CFD simulation of the first 100 seconds of the experiment has been performed by using the Euler-Euler two-phase model of FLUENT code. In wall condensation, the condensing water forms a film layer on the wall surface, which is modelled by mass transfer from the gas phase to the liquid water phase in the near-wall grid cell. The direct-contact condensation in the wetwell is modelled with a heat transfer coefficient.
Original languageEnglish
Number of pages12
Publication statusPublished - 2010
MoE publication typeNot Eligible
EventCFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3 - Bethesda North Marriott Hotel & Conference Centre, Bethesda, United States
Duration: 14 Sep 201016 Sep 2010
https://www.oecd-nea.org/nsd/csni/cfd/workshops/CFD4NRS-3/csni-r2011-14.pdf (Proceedings)
https://www.oecd-nea.org/nsd/csni/cfd/workshops/CFD4NRS-3/ (Papers)

Workshop

WorkshopCFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3
CountryUnited States
CityBethesda
Period14/09/1016/09/10
Internet address

Fingerprint

compartments
charge flow devices
containment
condensation
vapors
retarding
water
condensing
vents
test facilities
air flow
heat transfer coefficients
mass transfer
grids
vapor phases
air
liquids
cells
simulation

Keywords

  • Condensation pool
  • pressure suppression pool
  • large-break LOCA
  • BWR
  • CFD

Cite this

Pättikangas, T., Niemi, J., Laine, J., Puustinen, M., & Purhonen, H. (2010). CFD modelling of condensation of vapour in the pressurized PPOOLEX facility. Paper presented at CFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3, Bethesda, United States.
Pättikangas, Timo ; Niemi, Jarto ; Laine, Jani ; Puustinen, Markku ; Purhonen, Heikki. / CFD modelling of condensation of vapour in the pressurized PPOOLEX facility. Paper presented at CFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3, Bethesda, United States.12 p.
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abstract = "The behaviour of a pressure suppression containment is studied experimentally and by performing CFD calculations. The experiments have been performed with the PPOOLEX test facility, which is a scaled-down two-compartment model of a pressure suppression containment of a BWR. In the experiments, vapour is blown into the drywell compartment initially filled with air. When the pressure increases, the mixture of air and vapour flows through the vent pipe into the water pool of the wetwell compartment.CFD simulation of the first 100 seconds of the experiment has been performed by using the Euler-Euler two-phase model of FLUENT code. In wall condensation, the condensing water forms a film layer on the wall surface, which is modelled by mass transfer from the gas phase to the liquid water phase in the near-wall grid cell. The direct-contact condensation in the wetwell is modelled with a heat transfer coefficient.",
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Pättikangas, T, Niemi, J, Laine, J, Puustinen, M & Purhonen, H 2010, 'CFD modelling of condensation of vapour in the pressurized PPOOLEX facility', Paper presented at CFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3, Bethesda, United States, 14/09/10 - 16/09/10.

CFD modelling of condensation of vapour in the pressurized PPOOLEX facility. / Pättikangas, Timo; Niemi, Jarto; Laine, Jani; Puustinen, Markku; Purhonen, Heikki.

2010. Paper presented at CFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3, Bethesda, United States.

Research output: Contribution to conferenceConference articleScientificpeer-review

TY - CONF

T1 - CFD modelling of condensation of vapour in the pressurized PPOOLEX facility

AU - Pättikangas, Timo

AU - Niemi, Jarto

AU - Laine, Jani

AU - Puustinen, Markku

AU - Purhonen, Heikki

N1 - Project code: 41509 Published online

PY - 2010

Y1 - 2010

N2 - The behaviour of a pressure suppression containment is studied experimentally and by performing CFD calculations. The experiments have been performed with the PPOOLEX test facility, which is a scaled-down two-compartment model of a pressure suppression containment of a BWR. In the experiments, vapour is blown into the drywell compartment initially filled with air. When the pressure increases, the mixture of air and vapour flows through the vent pipe into the water pool of the wetwell compartment.CFD simulation of the first 100 seconds of the experiment has been performed by using the Euler-Euler two-phase model of FLUENT code. In wall condensation, the condensing water forms a film layer on the wall surface, which is modelled by mass transfer from the gas phase to the liquid water phase in the near-wall grid cell. The direct-contact condensation in the wetwell is modelled with a heat transfer coefficient.

AB - The behaviour of a pressure suppression containment is studied experimentally and by performing CFD calculations. The experiments have been performed with the PPOOLEX test facility, which is a scaled-down two-compartment model of a pressure suppression containment of a BWR. In the experiments, vapour is blown into the drywell compartment initially filled with air. When the pressure increases, the mixture of air and vapour flows through the vent pipe into the water pool of the wetwell compartment.CFD simulation of the first 100 seconds of the experiment has been performed by using the Euler-Euler two-phase model of FLUENT code. In wall condensation, the condensing water forms a film layer on the wall surface, which is modelled by mass transfer from the gas phase to the liquid water phase in the near-wall grid cell. The direct-contact condensation in the wetwell is modelled with a heat transfer coefficient.

KW - Condensation pool

KW - pressure suppression pool

KW - large-break LOCA

KW - BWR

KW - CFD

M3 - Conference article

ER -

Pättikangas T, Niemi J, Laine J, Puustinen M, Purhonen H. CFD modelling of condensation of vapour in the pressurized PPOOLEX facility. 2010. Paper presented at CFD for Nuclear Reactor Safety Applications Workshop, CFD4NRS-3, Bethesda, United States.