Forced convective boiling experiments of HFE-7000 are
conducted in earth gravity and under microgravity conditions.
The experiment mainly consists in the study of a two-phase
flow through a 6 mm diameter sapphire tube uniformly heated
by an ITO coating. The parameters of the hydraulic system are
set by the conditioning system and measurements of pressure
drops, void fraction and wall and fluid temperatures are
provided. High-speed movies of the flow are also taken. The
data are collected in normal gravity and during a series of
parabolic trajectories flown onboard an airplane. Flow
visualizations, temperature, void fraction and pressure drop
measurements are analyzed to obtain flow pattern, liquid film
thickness in annular flow, wall and interfacial shear stresses
and heat transfer coefficient.
Papers presented at the 13th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Portoroz, Slovenia on 17-19 July 2017 .