Modeling Temperature Nonuniformities in a Fuel-Element Bundle of a VVER-1000 Fuel-Assembly

To make NPPs with pressurized light-water reactors more competitive, their reactor cores, which consist of jacketless fuel assemblies with rod-shaped fuel-element bundles and guide channels for the reactivity control organs, must be improved. An increase of the heat flux from the outer surface of th...

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Bibliographic Details
Published in:Atomic energy (New York, N.Y.) N.Y.), 2013-05, Vol.114 (1), p.69-72
Main Authors: Getya, S. I., Krapivtsev, V. G., Markov, P. V., Solonin, V. I., Tsirin, S. I.
Format: Article
Language:English
Subjects:
Analysis
Flow velocity
Hadrons
Heat
Heavy Ions
Mathematical models
Nuclear Chemistry
Nuclear Energy
Nuclear engineering
Nuclear fuels
Nuclear Physics
Nuclear reactors
Physics
Physics and Astronomy
Reactors
Reynolds number
Scientific and Technical Communications
Studies
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Summary:To make NPPs with pressurized light-water reactors more competitive, their reactor cores, which consist of jacketless fuel assemblies with rod-shaped fuel-element bundles and guide channels for the reactivity control organs, must be improved. An increase of the heat flux from the outer surface of the fuel elements and different heating of the coolant due to the nonuniformity of the rod bundles and power release can cause damage to the fuel-element cladding degradation of its mechanical properties and subsequent leaks.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-013-9673-3