COMPUTATIONAL-EXPERIMENTAL INVESTIGATIONS OF THE PROCESSES OF MOTION OF A COOLANT FLOW IN THE REGION OF THE GUIDE CHANNEL BEHIND MIXING GRIDS OF FUEL ASSEMBLIES

In the paper, the authors have presented local hydrodynamic characteristics (averaged-velocity vector fi elds) of the fl ow behind various types of intensifi er grids of TVS-Kvadrat fuel assemblies intended for operation in pressurizedwater-reactor (PWR) cores. The structure of the fl ow behind these structural elements of the cassette has been revealed and the infl uence of the shape and orientation of turbulizers on the stabilization (equalization) length of transverse velocities in the characteristic regions of an assembly has been determined. The acquired information of the experimental investigations was used during the engineering substantiation of the TVS-Kvadrat structure for installing these assemblies into rector plants.
   
Author:  A. V. Gerasimov, S. M. Dmitriev, A. A. Dobrov, D. V. Doronkov, A. N. Pronin, A. V. Ryazanov, D. N. Solntsev, and A. E. Khrobostov
Keywords:  reactor, core, fuel assembly, intensifi er grid, coolant hydrodynamics
Page:  145