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Liquid crystal techniques of visualization in rotating annulus experiments

Abstract

To the well-known rotating annulus experiments we applied liquid crystal techniques of visualization in order to obtain clear video-pictures of internal flow and temperature in the fluid. Then we developed the idea of simultaneously injecting several types of liquid crystals of different temperature ranges to observe the fluid with a wide temperature range. It was shown that with this idea it was possible to take clear video-pictures throughout the whole interior of the fluid. This revealed that the pattern of the bottom flow does not have the characteristics of the Eady type baroclinic waves. Furthermore, the typcial meridional gradient of temperature of the baroclinic wave was directly observed from isothermal lines appearing in the fluid as colour band lines.

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References

  1. Dabiri, D.; Gharib, M. 1989: Particle image thermometry and its application to a heated vortex-ring. Bull. Am. Phys. Soc. 34, 2337

    Google Scholar 

  2. Eady, E. T. 1949: Long waves and cyclone waves. Tellus 1, 33–52

    Google Scholar 

  3. Heijist, G. J. F. van; Kloosterziel, R. C. 1989: Tripolar vortices in a rotating fluid. Nature 338, 569–571

    Google Scholar 

  4. Hide, R.; Mason, P. J. 1975: Sloping convection in a rotating fluid. Adv. Phys. 24, 47–100

    Google Scholar 

  5. Marcus, P. S. 1988: Numerical simulation of Jupitor's Great Red Spot. Nature 331, 693–696

    Google Scholar 

  6. Matsuwo, N.; Uryu, M.; Sawada, R. 1976: An experimental study on the internal baroclinic waves in a rotating annulus: Part I. Thermal structure. J. Meteorol. Soc. Jpn. 54, 96–107

    Google Scholar 

  7. Matsuwo, N.; Uryu, M.; Sawada, R. 1977: An experimental study on the internal baroclinic waves in a rotating annulus: Part II. Dynamical structure. J. Meteorol. Soc. Jpn. 55, 115–125

    Google Scholar 

  8. Rhee, H. S.; Koseff, J. R.; Street, R. L. 1984: Flow visualization of a recirculating flow by rheoscopic liquid and liquid crystal techniques. Exp. Fluids 2, 57–64

    Google Scholar 

  9. Solomon, T. H.; Gollub, J. P. 1990: Sheared boundary layers in turbulent Rayleigh-Benard convection. Phys. Rev. Lett. 64, 2382–2385

    Google Scholar 

  10. Sommeria, J.; Meyers, S. D.; Swinney, H. L. 1988: Laboratory simulation of Jupitor's Great Red Spot. Nature 331, 689–693

    Google Scholar 

  11. Tajima, T.; Kawahira, K. 1991: Three dimensional measurement of fluid velocity and temperature distribution in the rotating annulus experiment by means of liquid crystal. Tenki 38, 495–500 (in Japanese)

    Google Scholar 

  12. Tritton, D. J. 1988: Flow in rotating fluid and experimental methods. In: Physical Fluid Dynamics. 2nd ed., pp. 240–242, 417–430. Oxford: Clarendon Press

    Google Scholar 

  13. Ukaji, K.; Tamaki, K. 1989: Comparison of laboratory experiments and numerical simulations of steady baroclinic waves produced in a differentially heated rotating fluid annulus. J. Meteorol. Soc. Jpn. 67, 359–373

    Google Scholar 

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Tajima, T., Kawahira, K. Liquid crystal techniques of visualization in rotating annulus experiments. Experiments in Fluids 14, 65–69 (1993). https://doi.org/10.1007/BF00196989

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Keywords

  • Colour
  • Liquid Crystal
  • Wide Temperature Range
  • Internal Flow
  • Colour Band