Simulating spatial effects during condensation of steam in a model containment using the KUPOL-3D computer code

Vitushkina, N. M.; Luk'yanov, A. A.; Shan'gin, N. N.

doi:10.1134/s004060150609014x

Cited by 3 publications

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“…With properly specified boundary conditions, this model makes it possible to perform numerical analysis accounting for the operation of PARs and condensation heat exchangers of the passive heat removal system in the reactor building. It is reasonable to use this model as a substitute for simplified models in alike simulations described in [1,18].…”

Section: Discussionmentioning

confidence: 99%

“…Film condensation of steam on containment walls will be taken into account here by defining corresponding boundary conditions. Note that a simplified variant of such an approach has been presented in [18]. As we know, quite an acceptable estimate of the rate of heat and mass exchange for film condensation of single-component resting steam on a vertical flat wall is provided by the composite formula of Nusselt [16,[19][20][21][22]:…”

Section: Accounting For Film Condensation Of Steam On Containment Wallsmentioning

confidence: 99%

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Modeling of Spray System Operation under Hydrogen and Steam Emissions in NPP Containment during Severe Accident

Seleznev¹,

Aleshin²,

Pryalov³

2011

Science and Technology of Nuclear Installations

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The paper describes one of the variants of mathematical models of a fluid dynamics process inside the containment, which occurs in the conditions of operation of spray systems in severe accidents at nuclear power plant. The source of emergency emissions in this case is the leak of the coolant or rupture at full cross-section of the main circulating pipeline in a reactor building. Leak or rupture characteristics define the localization and the temporal law of functioning of a source of emergency emission (or accrued operating) of warmed up hydrogen and steam in the containment. Operation of this source at the course of analyzed accident models should be described by the assignment of the relevant Dirichlet boundary conditions. Functioning of the passive autocatalytic recombiners of hydrogen is described in the form of the complex Newton boundary conditions.

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Section: Discussionmentioning

confidence: 99%

Section: Accounting For Film Condensation Of Steam On Containment Wallsmentioning

confidence: 99%

Modeling of Spray System Operation under Hydrogen and Steam Emissions in NPP Containment during Severe Accident

Seleznev¹,

Aleshin²,

Pryalov³

2011

Science and Technology of Nuclear Installations

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Codes of new generation - the industry platform for the safety assessment in the Proryv project

Bolshov

Strizhov

Mosunova

et al. 2022

Nuclear Engineering and Design

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Codes of new generation for safety justification of power units with a closed nuclear fuel cycle developed for the “PRORYV” project

Bolshov¹,

Strizhov²,

Mosunova³

2020

NUCET

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The article describes the status of development of codes of new generation for the “PRORYV” Project by the end of 2019: twenty-five commercial-grade software products to justify design solutions and safety of power units with fast neutron reactors and liquid metal coolant (sodium and lead) in a closed nuclear fuel cycle. The developed system of codes is multi-physical and multi-scale that allows performing both calculations of the whole installations and high precision calculations of their individual elements. The developed codes offer unique features. Twelve developed codes have already been certified by Rostechnadzor, and six more have been submitted for certification. In addition to creating the software products, a large-scale work is being carried out to conduct experimental studies for code validation that meet modern requirements imposed by the codes: unique measurement techniques have been created; experimental data on flow characteristics of heavy liquid metal coolant (HLMC) in a fuel assembly simulator have been obtained, as well as of “gas-HLMC” interphase interaction after inert gas injection in HLMC and characteristics of heat exchange between the inert gas and HLMC. The results are already used for validation of system and CFD codes used in the “PRORYV” Project.

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Simulating spatial effects during condensation of steam in a model containment using the KUPOL-3D computer code

Cited by 3 publications

References 0 publications

Modeling of Spray System Operation under Hydrogen and Steam Emissions in NPP Containment during Severe Accident

Modeling of Spray System Operation under Hydrogen and Steam Emissions in NPP Containment during Severe Accident

Codes of new generation - the industry platform for the safety assessment in the Proryv project

Codes of new generation for safety justification of power units with a closed nuclear fuel cycle developed for the “PRORYV” project

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