Measurement Techniques

, 54:524 | Cite as

The characteristic size of a sphere in convective heat transfer

  • A. V. Rumyantsev
  • V. G. Kharyukov
Thermal Measurements

The results of an experimental investigation of the convective heat transfer from a sphere to a temperature-stabilized gas flow for low values of the Reynolds number are presented. These results enable the following conclusion to be drawn: in the Nusselt number the radius of the sphere must be taken as the characteristic size and not the diameter, as is generally assumed.

Key words

flow meter convection characteristic size heat transfer coefficient Grashof Reynolds and Nusselt numbers 


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Copyright information

© Springer Science+Business Media, Inc. 2011

Authors and Affiliations

  1. 1.Kant Russian State UniversityKaliningradRussia

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