0 the heat that is absorbed or released by a substance when it changes state, for example from a liquid to a gas, while the temperature of the substance does not change -- 潛熱（物質的形態發生變化，如從液體變為氣體時，吸收或放出的熱量。在此過程中，溫度不發生變化）
Essential differences are that (i) systems describing the two species include reaction terms; and (ii) the latent heat is zero.
This just expresses normal heat conduction with a sink term representing latent heat being taken up by melting.
By increasing the surface area a t which solidification can take place, the mushy layer enhances the release of both latent heat and rejected fluid.
The code handles phase changes with latent heat as well as temperaturedependent thermal conductivity and heat capacity.
Aside from the latent heat of the liquid core, the chemical energy inventory is difficult to evaluate.
We see that the linear profile is modified by a quadratic term due to the internal release of latent heat.
When equilibrium is achieved, rising vapor will condense to liquid at the ice interface, deposit its latent heat of fusion there, and then drain as liquid.
This allows crystals of the heavy component to form in the melt, lowering the composition of the melt and also heating the melt through the release of latent heat.
