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CFD (Computational Fluid Dynamics)
calculation
turns
out to be a good approximation to the real behavior of the lithium
(Li) flow of the target of the International Fusion
Materials Irradiation Facility (IFMIF). A three dimensional (3D)
modelling of the IFMIF design Li target
assembly, made with the
CFD commercial code ANSYS-FLUENT has been carried out. The simulation
by a structural mesh of 881160 hexahedral cells, is focused on
the thermal-hydraulic analysis inside the Li jet flow. For, this
purpose, the two Deuteron Beams energy deposition profile is modelled
as an energy source
term inside the volume of liquid affected. Turbulence is
estimated using the RNG k-e model, and a surface-tracking
technique applied to a fixed Eulerian mesh called Volume of
Fluid (VOF) is used to
determine the position of the free
surface.
Calculations varying the jet velocity from a range of 10-20 m/s, show
that maximum calculated temperatures are still below the
Lithium's boiling point, due to the increase of the pressure induced by
centrifugal force.
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