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Three-dimensional temperature measurement in turbulent thermal convection by extended range scanning liquid crystal thermometry

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Abstract

The usable temperature range of liquid crystal thermometry has been extended and used to measure three-dimensional temperature fields in turbulent thermal convection. The color of the liquid crystals is calibrated against temperature using the standard method in which hue is the single input variable and two new methods: hue/intensity as input variable, and hue, saturation and intensity as input variables to a neural network. Relative to the hue calibration, the new methods extend the range over which temperature can be measured by more than 100%. Three-dimensional temperature measurements of turbulent thermal convection over smooth surfaces were carried out at a flux Rayleigh number of 3 × 109 by scanning a white light sheet normal to the visualized image plane and capturing a number of sequential images at various positions of the light sheet. Stacks of the planar data were composed into three-dimensional temperature distributions. The results indicate the presence of an irregular spoke pattern over the surface and the generation of plumes from the intersections of the patterns, consistent with other investigations.

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References

  • Adrian, R. J., Ferreira, R. T. D. S., Boberg, T., Turbulent Thermal Convection in Wide Horizontal Fluid Layers, Exp. Fluids, Vol. 4, (1986), 121–141.

    Google Scholar 

  • Akino, N., Kunugi, T., Ichimiya, K., Mistushiro, K., Ueda, M. Improved Liquid-Crystal Thermometry Excluding Human Color Sensation. (Part 1: Concept and Calibration), ASME Heat Transfer Div., Vol. 58, (1986), 57–62.

    Google Scholar 

  • Akino, N., Kunugi, T., Ueda, M., Kurosawa, A., Liquid Crystal Thermometry Based on Automatic Color Evaluation and Applications to Measure Turbulent Heat Transfer, in Transport Phenomena in Turbulent Flows, (1988), 807–820.

  • Balachandar, S., Structure in Turbulent Thermal Convection, Phys. Fluids, Vol. 4, (1992), 2715–2726.

    Article  Google Scholar 

  • Dabiri, D. and Gharib, M., Digital Particle Image Thermometry (The Method and Implementation), Exp. Fluids, Vol. 11, (1991), 77–86.

    Article  Google Scholar 

  • Fujisawa, N., Adrian, R. J. and Keane, R. D., Three-Dimensional Temperature Measurement in Turbulent Thermal Convection Over Smooth and Rough Surfaces by Scanning Liquid Crystal Thermometry, Proc. Intl. Conf. Fluid Engr., Tokyo, Japan, (1997) , 1037–1042.

  • Gluckman, B. J., Willaime H., Gollub, J. P., Geometry of Isothermal and Isoconcentration Surfaces in Thermal Turbulence, Phys. Fluids, Vol. A5, (1993), 647–661.

    Article  Google Scholar 

  • Hallcrest, Inc., (1996) Private communication.

  • Kasagi, N., Moffat, R. J., Hirata, M., Liquid Crystals, In Handbook of Flow Visualization, (Ed. Yang, W.J.), (1989), 105–124, New York, Hemisphere.

    Google Scholar 

  • Keane, R. D. and Adrian, R. J., A Qualitative Study of Unsteady Non-Penetrative Thermal Convection from Non-Uniform Surfaces, 12th Australasian Fluid Mech Conf, Sydney, Australia, (1995), 1–4.

  • Keane, R. D., Fujisawa, N. and Adrian, R. J., Unsteady Non-Penetrative Thermal Convection from Non-Uniform Surfaces, TAM Report No.847 UIUC-ENG-97-6008, (1997), 1–26.

  • Kimura, I., Takamori, T., Ozawa, M., Takenaka, M. and Manabe, Y., Quantitative Thermal Flow Visualization Using Color Image Processing (Application to a Natural Convection Visualized by Liquid Crystals), ASME-FED 85, Flow Visualization (Eds Khalighi, B, Braun, M.J. and Freitas, C.J.), (1989), 69–76.

  • Kimura, I., Kuroe, Y., Ozawa, M., Application of Neural Networks to Quantitative Flow Visualization, J. Flow Visualization and Image Processing”, Vol. 1, (1993), 261–269.

    Google Scholar 

  • Kobayashi, T., Saga, T. and Doh, D. A Three-Dimensional Simultaneous Scalar and Vector Tracking Method, Proc. Intl. Workshop on PIV, Fukui, Japan, (1995), 33–43.

  • Koschmieder, E. L., Benard Cells and Taylor Vortices, Cambridge University Press, (1993), 193.

  • Nozaki, T., Mochizuki, T., Kaji, N. and Mori, Y. H., Application of Liquid-Crystal Thermometry to Drop Temperature Measurements, Exp. Fluids, Vol. 18, (1995), 137–144.

    Article  Google Scholar 

  • Ozawa, M., Muller, U., Kimura, I. and Takamori, T., Flow and Temperature Measurement of Natural Convection in a Hele-Shaw Cell Using a Thermo-Sensitive Liquid-Crystal Tracer, Exp. Fluids, Vol. 12, (1992), 213–222.

    Article  Google Scholar 

  • Rhee, H. S., Koseff, J. R. and Street, R. L., Flow Visualization of a Recirculating Flow by Rheoscopic Liquid and Liquid Crystal Techniques, Exp. Fluids Vol. 2, (1984), 57–64.

    Article  Google Scholar 

  • Schmidt, H. and Schumann, U., Coherent Structure of the Convective Boundary Layer Derived From Large-Eddy Simulations, J. Fluid Mech., Vol. 200, (1989), 511–562.

    Article  MATH  Google Scholar 

  • Wilcox, N. A., Watson, A.T. and Tatterson, G.B., Color/Temperature Calibrations for Temperature Sensitive Tracer Particles, Proc. Intl. Symp. Physical and Numerical Flow Visualization, Albuquerque, USA, (1985), 65–74.

  • Willis, G. E. and Deardorff, J.W., A Laboratory Model of the Unstable Planetary Boundary Layer, J. Atmos. Sci., Vol. 31, (1974), 1297–1307.

    Article  Google Scholar 

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Author notes

  1. Fujisawa N.

    Present address: Department of Mechanical and Production Engineering, Niigata University, 950-2181, Niigata, Japan

Authors and Affiliations

  1. Department of Theoretical and Applied Mechanics, University of Illinois, 61801, Urbana, Illinois, USA

    Fujisawa N. & Adrian R. J.

  2. Department of Mechanical System Engineering, Gunma University, 376, Kiryu, Japan

    Fujisawa N.

Authors
  1. Fujisawa N.
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  2. Adrian R. J.
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Additional information

Authors’ Profiles Nobuyuki Fujisawa: He was educated at Iwate University (B.E. 1977) and at Tohoku University (M.E. 1979, D.E. 1983) in Japan. He joined to Gunma University in 1983 and worked as a research scientist in the field of turbomachinery, turbulence modelling and flow visualization. Later he promoted to an associate professor in mechatronics division in 1991 and he extended his research field to active control of flow-induced vibration and flow imaging. Since 1997, he has been a professor of Niigata University and continuing the research in active control of flow and flow-induced noise, flow visualization and image processing and PIV in thermal and fluid phenomena.

Ronald J. Adrian: He was educated at the University of Minnesota in mechanical engineering (B.M.E. 1967, M.S. 1969) and at Cambridge University in physics (Ph.D, 1972). His research interests are the space-time structure of turbulent fluid motion and the development of techniques, both experimental and mathematical, to explore this structure. Methods to which he has made fundamental contributions are the laser Doppler velocimeter technique, the method of particle image velocimetery and the stochastic estimation method. He is the Hoeft Prof. of Engineering at the University of Illinois, Urbana-Champaign, and Director of the Laboratory for Turbulence and Complex Flow in the Department of Theoretical and Applied Mechanics.

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Fujisawa, N., Adrian, R.J. Three-dimensional temperature measurement in turbulent thermal convection by extended range scanning liquid crystal thermometry. J Vis 1, 355–364 (1999). https://doi.org/10.1007/BF03181425

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  • DOI: https://doi.org/10.1007/BF03181425

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