Fast Reactors and Accelerator Driven Systems Knowledge Base

Conference Article: Special feature of temperature field formation in the system of interacting fuel subassemblies in fast reactor core

Bogatirjev, I.L.; Zhukov, A.V.; Mtjukhin, N.M.; Sorokin, A.P.; Ushakov, P.A. (State Scientific Center of Russian Federation, Institute of Physics and Power Engineering, Obninsk, Kaluga Region (Russian Federation))

Abstract

Model experiments simulating interacting of fuel subassemblies in fast reactor being under operational reactor conditions have been analyzed to define the influence of geometrical and flow parameters on temperature distribution. In a new version of subchannel code MIF-AZ relationships developed on the basis of experimental results were taken into account. The predictions let us assess an influence of inter-subassembly heat transfer as well as deformation of pin bundles and duct observed in reactor campaign on temperature distribution.

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key words: calculation methods; experimental data; fast reactors; fluid flow; fuel element clusters; heat transfer; m codes; simulation; temperature distribution

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Reference:

Technical committee meeting on methods and codes for calculations of thermohydraulic parameters for fuel, absorber pins and assemblies of LMFR's with traditional and burner cores. Obninsk (Russian Federation) 27-31 Jul 1998

International Atomic Energy Agency, Vienna (Austria)

IAEA-TECDOC--1157, pp:226-233