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Pattern formation and transient thermocapillary flow in a rectangular side-heated open cavity
Ist Teil von
Microgravity science and technology, 2002-09, Vol.13 (3), p.30-35
Ort / Verlag
Dordrecht: Springer Nature B.V
Erscheinungsjahr
2002
Link zum Volltext
Quelle
SpringerLink
Beschreibungen/Notizen
Marangoni convection in an open, side-heated container of a rectangular cross-section is investigated experimentally. The cavity's length is much larger than the distance between the heated walls. Therefore, the flow is quasi-two-dimensional if the thermocapillary Reynolds number and the Rayleigh number are small. On an increase of the temperature difference between the side walls the flow becomes three-dimensional. We measure the onset of the three-dimensional flow and its structure. Morover, microgravity experiments have been performed using the Drop Tower facility of ZARM at the University of Bremen. In these latter experiments the dynamics of the flow upon a step change from 1g to µg was measured. The result of the experiments and corresponding numerical simulations show a significant change of the flow pattern within the first 1.5 seconds after the step change.[PUBLICATION ABSTRACT]