Flow boiling in straight heated tubes under microgravity conditions

Marine Narcy (1) , Erik de Malmazet (1) , Catherine Colin (1)

1 IMFT - Institut de mécanique des fluides de Toulouse

Forced convective boiling experiments with HFE-7000 were conducted in earth gravity and under microgravity conditions. The experiment mainly consists in the study of a boiling flow (liquid-vapour flow) through a 6 mm diameter sapphire tube uniformly heated by an ITO coating. Measurements of pressure drops (on an adiabatic section), void fraction and wall and liquid temperatures are provided. High-speed movies of the flow are also taken. The data were collected in normal gravity and during a series of parabolic trajectories flown in an airplane. Flow visualizations, temperature, pressure and void fraction measurements are analysed to obtain flow pattern, heat transfer, film thickness and wall friction data.

Mots clés: Flow boiling; Two-phase flow; Microgravity; Heat transfer; Wall friction

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Marine Narcy, Erik de Malmazet, Catherine Colin. Flow boiling in straight heated tubes under microgravity conditions. 8th International Conference on Multiphase Flow - ICMF 2013, May 2013, Jeju, South Korea. pp. 1-10. ⟨hal-00917818⟩