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Abstract
This paper presents a role of the Navier number (Na-dimensionless slip-length) in universal modelling of flow reported in micro- and nano-channels like: capillary biological flows, fuel cell systems, micro-electro-mechanical systems and nano-electro-mechanical systems. Similar to another bulk-like and surface-like dimensionless numbers, the Na number should be treated as a ratio of internal viscous to external viscous momentum transport and therefore this notion cannot be extended onto whole friction resistance phenomena. Several examples of dimensionless number for liquids and rarified gasses flowing in solid cannels are presented. Additionally this article explains a role of the Navier number in prediction of closures for laminar to turbulent transition undergoing via eddies detachment from the slip layer in nano-channels.
Authors (3)
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Paweł Ziółkowski dr inż.
- Środowiskowe Studium Doktoranckie przy WM PG, Instytut Maszyn Przepływowych PAN Zakład Konwersji Energii
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Janusz Badur
- Instytut Maszyn Przepływowych PAN Zakład Konwersji Energii
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Keywords
Details
- Category:
- Conference activity
- Type:
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Title of issue:
- PhD Interdisciplinary Journal.-Nr 1 strony 1 - 10
- Language:
- English
- Publication year:
- 2014
- Bibliographic description:
- Ziółkowski P., Badur J., Ziółkowski P.: DO WE NEED NAVIER NUMBER? – FURTHER REMARKS AND COMPARISON WITH ANOTHER DIMENSIONLESS NUMBERS// PhD Interdisciplinary Journal.-Nr 1/ ed. Michał Czubenko Gdańsk: Gdańsk University of Technology 2014, 2014, s.1-10
- Verified by:
- Gdańsk University of Technology
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