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| Artikel-Nr.: 5667A-9783736994935 Herst.-Nr.: 9783736994935 EAN/GTIN: 9783736994935 |
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| Two-phase flow with a free surface, non-isothermal boundary conditions and heat and mass transfer over the free surface must be understood for a save operation of cryogenic upper stages with restart capability. This work is a foundational research carried out with numerical and experimental means. A mathematical and numerical model were developed that allow to describe such systems under varying gravity levels. The reorientation of cryogenic parahydrogen upon a sudden gravity step reduction was investigated experimentally using the drop tower at ZARM, University of Bremen. Influencing the motion and final shape of the free surface could be realized with a precisely defined wall temperature gradient. Heat and mass transfer over the free surface in a microgravity environment could be investigated numerically based on the experimental results of the SOURCE-II sounding rocket experiment. A transient simulation was carried out to study the coupled system between superheated container wall, subcooled liquid, free surface configuration and three-phase contact angle. Weitere Informationen: | | Author: | Sebastian Schmitt | Verlag: | Cuvillier Verlag | Sprache: | eng |
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| Weitere Suchbegriffe: chemische technik - englischsprachig, Fertigungstechnik, CFD, CHT, Microgravity, cryogenic fluids, experimental work, free surface reorientation, heat transfer, mass transfer, two-phase flow |
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