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Particle accumulation structures in time-dependent thermocapillary flow in a liquid bridge under microgravity

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Abstract

The formation of a dynamic spiral string of particles with larger density than the fluid was investigated for time-dependent thermocapillary flow in liquid bridges under various gravity conditions including microgravity. The dynamic spiral string forms after approximately 20–60 oscillation periods from the homogeneous dilute particle suspension. It was found that the action of gravity is not decisive in the process of the particle accumulation structure (PAS) but gravity influences the flow field for PAS-formation. We could realize and observe PAS with modal structure m=3 under μ-g but modal structure m=2 occurred only during a transient of the operating parameters in an aspect ratio-range different from that under normal gravity. The correlation of the optically observed PAS structure with the temperature structure of the azimuthally rotating hydrothermal wave on the free surface is the same under microgravity as under normal gravity indicating that PAS is a pure Marangoni effect.

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References

  1. Schwabe, D., Scharmann, A.: Some evidence for the existence and magnitude of a critical Marangoni-number for the onset of oscillatory flow in crystal growth melts. J. Crystal Growth, vol. 46, p. 125 (1979)

    Article  Google Scholar 

  2. Chun, Ch.-H., Wuest, W.: Experiments on the transition from steady to oscillatory Marangoni-convection of a floating zone under reduced gravity effect. Acta Astronautica, vol. 6, p. 1073 (1979)

    Article  Google Scholar 

  3. Preisser, F., Schwabe, D., Scharmann, A.: Steady and oscillatory thermocapillary convection in liquid columns with free cylindrical surface. J. Fluid Mech., vol. 126, p. 545 (1983)

    Article  Google Scholar 

  4. Kamotani, Y., Ostrach, S., Vargas, M.: Oscillatory thermocapillary convection in a simulated floating—zone configuration. J. Crystal Growth, vol. 66, p. 83 (1984)

    Article  Google Scholar 

  5. Velten, R., Schwabe, D., Scharmann, A.: The periodic instability of thermocapillary convection in cylindrical liquid bridges. Phys. Fluids A, vol. 3, p. 267 (1991)

    Article  Google Scholar 

  6. Muehlner, K.A., Schatz, M.F., Petrov, V., McCormick, W.D., Swift, J.B., Swinney, H.L.: Observation of helical travelling-wave convection in a liquid bridge. Phys. Fluids, vol. 9, p. 1850 (1997)

    Article  Google Scholar 

  7. Frank, S., Schwabe, D.: Temporal and spatial elements of thermocapillary convection in floating zones. Exp. Fluids, vol. 23, p. 234 (1997)

    Article  Google Scholar 

  8. Schwabe, D., Velten, R., Scharmann, A.: The instability of surface tension driven flow in models for floating zones under normal and reduced gravity. J. Crystal Growth, vol. 99, p. 1258 (1990)

    Article  Google Scholar 

  9. Schwabe, D., Frank, S.: Experiments on the transition to chaotic thermocapillary flow in floating zones under microgravity. Adv. Space Res., vol. 24, p. 1391 (1999)

    Article  Google Scholar 

  10. Ueno, I., Tanaka, S., Kawamura, H.: Oscillatory and chaotic thermocapillary convection in a half-zone liquid bridge. Phys. Fluids, vol. 15, p. 408 (2003)

    Article  Google Scholar 

  11. Schwabe, D., Hintz P., Frank, S.: New features of thermocapillary convection in floating zones revealed by tracer particle accumulation structures (PAS). Microgravity sci. technol., vol. 9, p. 163 (1996)

    Google Scholar 

  12. Schwabe, D., Frank, S.: Particle accumulation structures (PAS) in the toroidal thermocapillary vortex of a floating zone — model for a step in planet-formation? Adv. Space Res., vol. 23, p. 1191 (1999)

    Article  Google Scholar 

  13. Tanaka, S., Kawamura, H., Ueno I. and Schwabe, D.: Flow structure and dynamic particle accumulation in thermocapillary convection in a liquid bridge. Phys. Fluids, vol. 18, 067103

  14. Schwabe, D., Tanaka, S., Mizev, A., Kawamura, H.: Formation of dynamic particle accumulation structures in oscillatory thermocapillary flow in liquid bridges. Phys. Fluids, submitted 2006

  15. Saffman, P.G.: The lift on a small sphere in a slow shear flow. J. Fluid Mech., vol. 22, p. 385 (1965)

    Article  MATH  Google Scholar 

  16. Kenning, D.B.R.: Two-phase flow with nonuniform surface tension. Appl. Mech. Rev., vol. 21, p. 1101 (1968)

    Google Scholar 

  17. Mizev, A.: Influence of an adsorption layer on the structure and stability of surface-tension driven flows. Phys. Fluids, vol. 17, 122107 (2005)

    Article  Google Scholar 

  18. Lappa, M., Savino, R., Monti, R.: Influence of buoyancy forces on Marangoni flow instabilities in liquid bridges. Int. J. Num. Methods for Heat & Fluid Flow, vol. 10, p. 721 (2000)

    Article  MATH  Google Scholar 

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Authors and Affiliations

  1. Physikalisches Institut der Justis-Liebig-Universität Gießen, H.-Buff-Ring 16, 35392, Gießen, Germany

    Dietrich Schwabe & A. Mizev

  2. Dept. Mechanical Engineering, Fac. Science & Technology, Tokyo University of Science, 2641 Yamazaki, Hoda, 278-8510, Chiba, Japan

    S. Tanaka & H. Kawamura

Authors
  1. Dietrich Schwabe
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  2. A. Mizev
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  3. S. Tanaka
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  4. H. Kawamura
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Correspondence to Dietrich Schwabe.

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Schwabe, D., Mizev, A., Tanaka, S. et al. Particle accumulation structures in time-dependent thermocapillary flow in a liquid bridge under microgravity. Microgravity Sci. Technol 18, 117–127 (2006). https://doi.org/10.1007/BF02870393

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