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Publisher DOI: 10.3390/e18050198
Title: What exactly is the Nusselt Number in convective heat transfer problems and are there alternatives?
Language: English
Authors: Herwig, Heinz 
Keywords: dimensional analysis;energy devaluation;entropic potential
Issue Date: 20-May-2016
Publisher: Multidisciplinary Digital Publishing Institute
Source: Entropy 18 (2016), 5: 198
Journal or Series Name: Entropy 
Abstract (english): 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.
DOI: 10.15480/882.1417
ISSN: 1099-4300
Other Identifiers: doi: 10.3390/e18050198
Institute: Technische Thermodynamik M-21 
Type: (wissenschaftlicher) Artikel
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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