Konferenzpaper

Herausgeberliste: Narayanan, R; Chui, TCP

Jahr der Veröffentlichung: 2005

Seiten: 36-42

Zeitschrift: Advances in Space Research

Bandnummer: 36

Heftnummer: 1

ISSN: 0273-1177

ISBN: *************

DOI Link: https://doi.org/10.1016/j.asr.2005.02.085

Konferenz: 35th COSPAR Scientific Assembly

Verlag: Elsevier

Serientitel: ADVANCES IN SPACE RESEARCH

Abstract: 
A liquid bridge of 15.0 mm length L and 3.0 mm radius r (aspect ratio A = L/r = 5) from 2 cSt silicone oil (Pr = 28) was established under microgravity during the flight of the sounding rocket MAXUS-4. Four different temperature differences Delta T= 7, 9, 10, 12 K have been applied between the ends for sufficient time to reach steady state thermocapillary flow conditions. The aim of the experiment - to observe the onset of hydrothermal waves and to measure their features, like the waves phase speed and the angle between the wave vector and the applied temperature gradient - was reached. Moreover, we can report about the occurrence of a further hydrodynamic structure or instability occurring at the same time in this experiment, namely convection cells of the type of the Benard-Marangoni instability, drifting in the surface flow from the hot towards the cold side. The latter instability has not been observed in the liquid bridges with A = I investigated normally, because of geometric restrictions. The Benard-Marangoni instability is due to the cooling of the free liquid surface in our experiment. (c) 2005 COSPAR. Published by Elsevier Ltd. All rights reserved.

Harvard-Zitierstil: Schwabe, D. (2005) Hydrodynamic instabilities under microgravity in a differentially heated long liquid bridge with aspect ratio near the Rayleigh-limit: Experimental results, Advances in Space Research, 36(1), pp. 36-42. https://doi.org/10.1016/j.asr.2005.02.085

APA-Zitierstil: Schwabe, D. (2005). Hydrodynamic instabilities under microgravity in a differentially heated long liquid bridge with aspect ratio near the Rayleigh-limit: Experimental results. Advances in Space Research. 36(1), 36-42. https://doi.org/10.1016/j.asr.2005.02.085