Axisymmetric thermocapillary convection in a slowly rotating annular cylindrical container |
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Authors: | H F Bauer W Eidel |
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Institution: | Universit?t der Bundeswehr München, Institut für Raumfahrttechnik, Werner-Heisenberg-Weg 39, D-85?577 Neubiberg,
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Abstract: | In a slowly rotating annular cylindrical container the free liquid surface (liquid-gas interface) is subjected to a temperature
gradient in radial direction. The temperature dependent surface tension creates a shear stress on the interface which is transmitting
a thermocapillary convection in the bulk of the liquid. For constant temperature T
1 of the inner and T
2 of the outer wall a steady Marangoni convection takes place, exhibiting a double vortex ring of equal directional flow. For
time-oscillatory temperatures of the walls a time-dependent thermocapillary convection appears, which will create on the free
liquid surface various wave patterns. They shall, depending on the forcing frequency of the temperature, exhibit resonance
peaks. The velocity distribution and the response magnitude inside the container has been determined.
Received on 3 September 1997 |
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