[2B01-05] Application of Neutron Source and Target development

[2B05] A CFD modeling of the free-surface liquid lithium target of an accelerator-driven fusion neutron source

*Makoto M. Nakamura¹, Kai Masuda², Takashi Ebisawa², Makoto Oyaidzu², Satoshi Sato² (1. NIT Kushiro College, 2. QST)

Keywords:Fusion neutron source, Liquid lithium target, CFD, Free surface flow, Centrifugal force

The purpose of this study is to reproduce, by a CFD simulation, fluid behaviors of the free-surface liquid Li target of an accelerator-driven fusion neutron source in a high vacuum environment. We have developed a new CFD model for the free-surface liquid Li target. We simplified the target shape, which has actually a concave free-surface, to a 3D slab. The centrifugal force, caused by the concave shape, was modeled as a term of the external force in the fluid equation.
We will report, in the presentation, a comparison of the test simulation with the previous measurement of the thickness of the free-surface liquid Li, and we will discuss the validity of the CFD model newly developed.