Heat transfer results were non-dimensionalized by means
of the Nusselt and Rerot numbers. Low supercooling degree
values adopted the shape of the penetration theory for low
Rerot values, whereas at high values Nu becomes almost
independent of Rerot (Nu ¼ 550), mostly due to the impact of
the particle over the surface at higher mixing rates. Higher
surface supercooling degrees led to a constant ice layer
that reduced the Nu values to z 350.