Local pressure and velocity measurements in a water 19-rod bundle using a wire wrap spacer system

The first stage of nominal bundle measurements for the experimental project on local obstructions has been completed. The behaviour of the radial pressure and axial velocity around the rods, as well as the axial and radial behaviour of static pressure on a wall of the hexagonal housing, have been determined. This work was carried out in a 19-rod bundle using a wire-wrap spacer system with water as the working fluid. It has been found how the pressure and velocity distributions in a bundle section are affected by the wire position. (author)