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Investigation of the thermal entry length in laminar wavy falling films

  • Two-Phase Systems
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Abstract

The use of liquid films flow offers solutions for the problems associated with the microgravity applications. The thermal entry length of laminar wavy falling films was experimentally determined under full gravity conditions by means of infrared thermography. A dependence of the entry length on the Reynolds, Prandtl, and Kapitza number as well as the ratio Pr0/PrW between the Prandtl numbers at inflow and wall temperatures was found.

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Authors and Affiliations

  1. Institute of Heat and Mass Transfer, RWTH Aachen University, Eilfschornsteinstr, 18, 52056, Aachen, Germany

    Viacheslav V. Lel, Georg F. Dietze, Hannes Stadler, Faruk Al-Sibai & Reinhold Kneer

Authors
  1. Viacheslav V. Lel
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  2. Georg F. Dietze
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  3. Hannes Stadler
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  4. Faruk Al-Sibai
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  5. Reinhold Kneer
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Corresponding author

Correspondence to Reinhold Kneer.

Additional information

Paper was presented on the Second International Topical Team Workshop on TWO-PHASE SYSTEMS FOR GROUND AND SPACE APPLICATIONS October 26–28, 2007, Kyoto, Japan.

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Lel, V.V., Dietze, G.F., Stadler, H. et al. Investigation of the thermal entry length in laminar wavy falling films. Microgravity Sci. Technol 19, 66–68 (2007). https://doi.org/10.1007/BF02915754

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  • DOI: https://doi.org/10.1007/BF02915754

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