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Flow boiling in microgravity condition investigation using inverse techniques

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Abstract

The objective is to provide a method to obtain local heat transfer coefficients in small channels when flow boiling occurs. The experimental device has been developed to perform investigations in parabolic flights campaigns on board A300-ZéroG. Simultaneously flow visualization and thermo-hydraulic measurements are carried out to investigate the two phase flow and heat transfer in minichannels. The experiments are conducted with HFE-7100 in several operating conditions for three hydraulic diameters.

The investigations concern flow pattern and the associated heat transfer coefficient during convective for several gravity levels. We mainly on the thermal measurements which consists in inversing experimental temperature measurements (thermocouples) to derive the local surface temperature and heat flux. For the investigated operating conditions, the heat transfer coefficient is found to vary along the flow axis especially at the channel entrance zone.

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References

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Authors and Affiliations

  1. Ecole Polytechnique Universitaire de Marseille / Laboratoire IUSTI, 5 Rue Enrico Fermi - Technopole de Chateau-Gombert, 13453, Marseille, France

    L. Tadrist, S. Luciani, D. Brutin & C. Le Niliot

Authors
  1. L. Tadrist
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  2. S. Luciani
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  3. D. Brutin
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  4. C. Le Niliot
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Corresponding author

Correspondence to L. Tadrist.

Additional information

Keynote Lecture 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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Tadrist, L., Luciani, S., Brutin, D. et al. Flow boiling in microgravity condition investigation using inverse techniques. Microgravity Sci. Technol 19, 130–131 (2007). https://doi.org/10.1007/BF02915774

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  • DOI: https://doi.org/10.1007/BF02915774

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