Mathiak, Gerhard and Sies, Wolfram and Weiß, Sebastian and Willnecker, Rainer and Odabasi, Ziya and Plescher, Engelbert (2005) Effect of Vibration on Transport Experiments - Model Experiments during Parabolic Flights. ELGRA Biennial Meeting and General Assembly, 2005-09-21 - 2005-09-23, Santorini (Greece). (Unpublished)
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Abstract
Diffusion and convection are the main physical processes in crystal growth and metallurgy. On ground, the measured diffusion coefficients of liquids are often enlarged due to the additional mass transport of the natural convection especially at high temperatures. In microgravity, g-jitter and residual acceleration can easily disturb the measurement. The influence of vibrations on liquid transport experiments was investigated quantitatively in a model heat transport experiment using hot and warm water during three ESA parabolic campaigns. A reflight with a further developed experimental set-up was performed during ESA PFC 39 in March 2005. The goal was to minimize the transport induced by the starting of the experiment. Two different methods to start the experiments were used: the shear cell method and the flowing junction cell method. The cells with a 4mm and 10mm thin capillary were fixed on an oscillating platform in three different positions: with an angle of 0°, 45° and 90° between the capillary axis and the acceleration vector.
Item URL in elib: | https://elib.dlr.de/20914/ | ||||||||||||||||||||||||||||
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Document Type: | Conference or Workshop Item (Speech) | ||||||||||||||||||||||||||||
Title: | Effect of Vibration on Transport Experiments - Model Experiments during Parabolic Flights | ||||||||||||||||||||||||||||
Authors: |
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Date: | 2005 | ||||||||||||||||||||||||||||
Open Access: | No | ||||||||||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||||||||||
In SCOPUS: | No | ||||||||||||||||||||||||||||
In ISI Web of Science: | No | ||||||||||||||||||||||||||||
Status: | Unpublished | ||||||||||||||||||||||||||||
Keywords: | Diffusion, Thermal Conductivity, Microgravity, Parabolic Flight | ||||||||||||||||||||||||||||
Event Title: | ELGRA Biennial Meeting and General Assembly | ||||||||||||||||||||||||||||
Event Location: | Santorini (Greece) | ||||||||||||||||||||||||||||
Event Type: | international Conference | ||||||||||||||||||||||||||||
Event Start Date: | 21 September 2005 | ||||||||||||||||||||||||||||
Event End Date: | 23 September 2005 | ||||||||||||||||||||||||||||
Organizer: | ELGRA | ||||||||||||||||||||||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||||||||||||||||||||||
HGF - Program: | Space (old) | ||||||||||||||||||||||||||||
HGF - Program Themes: | W FR - Forschung unter Weltraumbedingungen (old) | ||||||||||||||||||||||||||||
DLR - Research area: | Space | ||||||||||||||||||||||||||||
DLR - Program: | W FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||
DLR - Research theme (Project): | W - Vorhaben Materialforschung unter Mikro-g (old) | ||||||||||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS) | ||||||||||||||||||||||||||||
Deposited By: | Mathiak, Dr.-Ing. Gerhard | ||||||||||||||||||||||||||||
Deposited On: | 03 Jan 2006 | ||||||||||||||||||||||||||||
Last Modified: | 24 Apr 2024 19:02 |
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