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Heat transfer in highly convective gaseous helium 4 flow.
Author(s) : CASTAING B., CHABAUD B., CHAVANNE X., et al.
Summary
Gaseous helium 4 close to the critical point presents very specific hydrodynamic characteristics: a very low kinematical viscosity and thermal diffusivity together with a diverging thermal dilatation. It is then possible to reach in a typically 10 cm size cell extremely high Rayleigh numbers. In a first series of experiments, the authors have measured the heat transfer in such conditions, reaching Nusselt numbers above 5000. They have evidenced a new behaviour and performed new experiments in a cell with characteristic changes of the boundary layer. Both series of experiments are presented and compared.
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Details
- Original title: Heat transfer in highly convective gaseous helium 4 flow.
- Record ID : 2000-1142
- Languages: English
- Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
- Publication date: 1999/09/19
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