Although the high melting temperature of molten salts is one of
the benefits of these materials, it also causes difficulties in performing
experiments. These difficulties include salt solidification
and container corrosion during tests, which are significant for
a molten salt mixture of LiF(46.5)-NaF(11.5)-KF(42) (mol%) (known
as FLiNaK) due to its high melting temperature of w727 K.
Analytical methods are therefore of particular assistance in evaluating
the thermal-hydraulic characteristics of FLiNaK salt. In the
present study, these characteristics, including the friction factor (fw)
and Nusselt (Nu) number distributions, and the hydraulic and