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Temperature visualization by use of liquid crystals of unsteady natural convection during supercooling and freezing of water in an enclosure with lateral cooling.

Author(s) : NISHIMURA T., FUJIWARA M., HORIE N., et al.

Type of article: Article

Summary

Previous studies of unsteady natural convection at an ice-forming surface have been by interferometers detecting changes in density and refractive index. As variations of these in water are very small below 40 deg C, the authors have explored a visualization technique using a chiral nematic type of liquid crystal with a wide colour change over small temperature change in the region required. The results are encouraging and indicate a definite change from clockwise to anti-clockwise movement at the interface, showing clearly the period of density inversion. D.W.H.

Details

  • Original title: Temperature visualization by use of liquid crystals of unsteady natural convection during supercooling and freezing of water in an enclosure with lateral cooling.
  • Record ID : 1993-0813
  • Languages: English
  • Source: International Journal of Heat and Mass Transfer - vol. 34 - n. 10
  • Publication date: 1991/10

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