Movie 1 Watch this video

Accelerated movie of the process after immersing the copper sphere in liquid nitrogen, showing film boiling, Minimum Heat Flux, transition boiling, Critical Heat Flux, and nucleate boiling.

Movie 2 Watch this video

Slow motion movie of the sphere in nucleate boiling near critical heat flux. The film is completely broken into bubbles and violent boiling and evaporation take place.

Movie 3 Watch this video

Slow motion movie of the sphere in high temperature film boiling (Twall-Tsat ~ 200K). A stable thick film of vapor can be clearly seen.

Movie 4 Watch this video

Slow motion movie of the sphere near Minimum Heat Flux. Here the vapor film is thinner but still stable.

Movie 5 Watch this video

Slow motion movie of the sphere in nucleate boiling at low heat flux. The bubbles originate from stable nucleation sites and the evaporation is gentle and steady.

Movie 6 Watch this video

Slow motion movie of the sphere in the transition heat flux regime. Notice the pulsing of the vapor on the lower part of the sphere, due to intermittent breakup of the film and transition to nucleate boiling, and re-formation of the film due to the large amount of vapor generated in nucleate boiling.