ISSN Online: 2377-424X
International Heat Transfer Conference 12
Fluiddynamics in a windowless symmetrical target for accelerator driven hybrid nuclear reactors
Sinopsis
This paper presents an experimental study of a symmetrical windowless target mock-up of the spallation target
of an Accelerator Driven System (ADS). The target configuration is made by two concentric cylinders (inner/
outer cylinder diameters 200/290 mm). Water has been used as hydraulic equivalent to lead-bismuth eutectic
fluid. The experiments have been carried out at room temperature and flow rate ranging from 5 to 15 kg/s. The
fluid velocity components have been measured by a pulsed echo ultrasound technique. The velocity field of the
liquid that flows downward the inner cylinder can be considered approximately axial-symmetrical and the
vertical and radial components at different vertical and radial position as a function of the initial level and of the flow rate are presented. A preliminary comparison of experimental data with the prediction of the finite volume
FLUENT code is also presented.