Vibrations of fuel-element bundles in VVER fuel assemblies excited by turbulent coolant flow

Vibrations of fuel-element bundles in VVER fuel assemblies excited by turbulent coolant flow

Complex experimental studies of hydrodynamically excited vibrations of fuel-element bundles have been performed on full-scale models of VVER-440 fuel assemblies. Pressure pulsations were used as the main hydrodynamic characteristic of turbulent coolant flow according to the effect of its load on the...

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Veröffentlicht in:Atomic energy (New York, N.Y.) N.Y.), 2013, Vol.113 (3), p.153-162
Hauptverfasser: Dragunov, Yu. G., Solonin, V. I., Perevezentsev, V. V., Petrov, I. V.
Format: Artikel
Sprache:eng
Schlagworte:
Bundles
Computational fluid dynamics
Coolants
Flow velocity
Fluid dynamics
Fluid flow
Hadrons
Heavy Ions
Nuclear Chemistry
Nuclear Energy
Nuclear fuels
Nuclear Physics
Physics
Physics and Astronomy
Pulsation
Reynolds number
Scale models
Sensors
Studies
Turbulence
Turbulent flow
Vibration
Vibration analysis
Vortices
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Zusammenfassung:Complex experimental studies of hydrodynamically excited vibrations of fuel-element bundles have been performed on full-scale models of VVER-440 fuel assemblies. Pressure pulsations were used as the main hydrodynamic characteristic of turbulent coolant flow according to the effect of its load on the fuel-element surfaces in the flow. Realizations of the random hydrodynamic loads causing vibrations of fuel elements are obtained on the basis of multi-point measurements of pressure pulsations along the perimeter of the outer row of the fuels elements in a bundle.
ISSN:1063-4258
1573-8205
DOI:10.1007/s10512-012-9610-x