To determine the temperature distribution the heat transfer coefficient has to be known. This coefficient determines the rate of convection, which is the main cooling mechanism in the hot dip galvanising process. The value of the heat transfer coefficient varies very much along the plate. There are also so called cooling ramps that increase the cooling. These must also be considered in the analysis.
Radiation is also an important cooling mechanism.
In some cases the zinc freezes very close to the jet. In others, it freezes several meters above.