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What exactly is the Nusselt Number in convective heat transfer problems and are there alternatives?
|Published in:||Entropy 18(2016), 5, Artikel-ID 198, Seite 1-15|
|Authors and Corporations:||, ,|
|Type of Resource:||E-Book Component Part|
: Entropy, 18(2016), 5, Artikel-ID 198, Seite 1-15
|Summary:||The often used Nusselt number is critically questioned with respect to its physical meaning. Based on a rigorous dimensional analysis, alternative assessment numbers are found that in a systematic way separately account for the quantitative and qualitative aspect of a heat transfer process. The qualitative aspect is related to the entropy generated in the temperature field of a real, irreversible heat transfer. The irreversibility can be quantified by referring it to the so-called entropic potential of the energy involved in the transfer process.|