1. Conception of a compact flow boiling loop for the International Space Station- First results in parabolic flights
- Author
-
Paul Chorin, Antoine Boned, Julien Sebilleau, Catherine Colin, Olaf Schoele-Schulz, Nicola Picchi, Christian Schwarz, Balazs Toth, Daniele Mangini, Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), Fédération de Recherche Fluides, Energie, Réacteurs, Matériaux et Transferts (FERMAT), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Airbus Defence and Space [Bremen], Airbus Defence and Space [Taufkirchen], European Space Research and Technology Centre (ESTEC), Agence Spatiale Européenne = European Space Agency (ESA), and GDR 2799 Micropesanteur Fondamentale & Appliquée
- Subjects
Flow visualisation ,Bubbly flow ,Mechanics of Materials ,General Materials Science ,Microgravity ,Flow boiling ,Dean Vortex ,[SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] - Abstract
International audience; The design of a pipe flow boiling experiment for the International Space Station is proposed, taking into account typical weight, power consumption and size constraints. The effect of singularities such as elbows upstream the test section is investigated. Velocity profiles downstream two elbows, measured by Particle Image Velocimetry are in good agreement with numerical simulation and allow to determine a specific distance (decay length) downstream the elbows for which the velocity profile recover its axisymmetry. From these results a breadboard is designed and tested in parabolic flights. Care has been taken to generate boiling downstream the decay length. Two-phase bubbly flow is observed with 2 perpendicular high-speed cameras in the test section and a symmetry of the bubble distribution in the pipe is verified for different gravity conditions when the bubbles are created after the decay length.
- Published
- 2023