Izvestiya vuzov. Yadernaya Energetika

The peer-reviewed scientific and technology journal. ISSN: 0204-3327

Experimental researches of local hydrodynamics of coolant in PWR FA-Kvadrat using different mixing grids

10/23/2015 2015 - #03 Thermal physics and thermal hydraulics

Dmitriev S.M. Borodin S.S. Varentsov A.V. Legchanov M.A. Sorokin V.D. Khrobostov A.E.

DOI: https://doi.org/10.26583/npe.2015.3.07

UDC: 621.039

There are results of experimental researches of local hydrodynamic characteristics of the coolant flow in the fuel assemblies PWR reactors using different mixing grids. The characteristics and patterns of coolant flow in the FA-Kvadrat with different types of mixing grids identified in the course of the experiments. The analysis of the spatial distribution of the projections of the absolute flow rate detailed picture of coolant flow for mixing grid with the installation of the three types of deflectors. There have been found the optimal design of the deflector for mixing FA-Kvadrat spacer grids in the standard cell and in the field guide channels. The results of the study of the local hydrodynamics of the coolant flow in the FA-KVADRAT adopted for practical using in «OKBM Africantov» in assessing the reliability of heat engineering PWR reactor cores and included in the database of verification of the computational fluid dynamics software (CFD-code) and detailed calculation of the PWR reactor’s core.

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nuclear reactor fuel assembly the coolant flow hydrodynamic heat and mass transferal mixing grid