# The Heat Conduction Limited Model for Boiling

### Assignment :

Finish Homework 9

Last week we talked about the boiling curve. This week we need to
talk about how
the code actually handles the process of boiling (and condensation for
that matter). It is
founded on the idea that you must look at the interface between liquid
and vapor to model the
process. All reactor modern safety codes assume a quasi-equilibrium
exists at the interface,
and a steady state energy equation requires that the product of the
mass flux (kg/m**2/sec)
and latent heat of vaporization (J/kg) across the interface is equal to
the total heat flux
(watts/m**2) delivered to the surface by conduction, radiation, and
turbulent convection.

We need a few equations to clarify this model, so its off to a PDF file for more
information.

Next week we will come back to this model for some refinements, so
review your
notes over the weekend.

**Maintained by John Mahaffy : jhm@psu.edu
**