CFD prediction of flow and phase distribution in fuel assemblies with spacers

This paper is concerned with the modeling and computation of multi-dimensional two-phase flows in BWR fuel assemblies. The modeling principles are presented based on using a two-fluid model in which lateral interfacial effects are accounted for. This model has been used to evaluate the velocity fiel...

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Bibliographic Details
Published inNuclear engineering and design Vol. 177; no. 1; pp. 215 - 228
Main Authors Anglart, H., Nylund, O., Kurul, N., Podowski, M.Z.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 01.12.1997
Elsevier
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Installations for energy generation and conversion: thermal and electrical energy
SRA - Energi
SRA - Energy
Two phase flow
Computational fluid dynamics
Computation code
Void fraction
Velocity distribution
Boiling water reactors
Modeling
Fuel assembly
Spacer
Gas liquid flow
Numerical simulation
Flow velocity
Nuclear reactors
Reactor cores
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Summary:This paper is concerned with the modeling and computation of multi-dimensional two-phase flows in BWR fuel assemblies. The modeling principles are presented based on using a two-fluid model in which lateral interfacial effects are accounted for. This model has been used to evaluate the velocity fields of both vapor and liquid phases, as well as phase distribution, between fuel elements in geometries similar to BWR fuel bundles. Furthermore, this model has been used to predict, in a detailed mechanistic manner, the effects of spacers on flow and phase distribution between, and pressure drop along, fuel elements. The related numerical simulations have been performed using a CFD computer code, CFDS-FLOW3D.
ISSN:0029-5493
1872-759X
1872-759X
DOI:10.1016/S0029-5493(97)00195-7