Hasegawa, Y. ; Frohnapfel, B. ; Kasagi, N. (2011)
Effects of Spatially Varying slip Length on Friction drag Reduction in wall Turbulence.
In: Journal of Physics: Conference Series, 318 (2)
doi: 10.1088/1742-6596/318/2/022028
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
A series of direct numerical simulation has been made of turbulent flow over hydrophobic surfaces, which are characterized by streamwise periodic micro-grooves. By assuming that the size of micro-grooves is much smaller than the typical length-scale of near-wall turbulent structures, the dynamical boundary condition is expressed by a mobility tensor, which relates the slip velocity and the surface shear stress. Based on the derived mathematical relationship between the friction drag and different dynamical contributions, it is shown how the turbulence contribution can be extracted and analyzed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Hasegawa, Y. ; Frohnapfel, B. ; Kasagi, N. |
| Art des Eintrags: | Bibliographie |
| Titel: | Effects of Spatially Varying slip Length on Friction drag Reduction in wall Turbulence |
| Sprache: | Englisch |
| Publikationsjahr: | 2011 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Physics: Conference Series |
| Jahrgang/Volume einer Zeitschrift: | 318 |
| (Heft-)Nummer: | 2 |
| DOI: | 10.1088/1742-6596/318/2/022028 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | A series of direct numerical simulation has been made of turbulent flow over hydrophobic surfaces, which are characterized by streamwise periodic micro-grooves. By assuming that the size of micro-grooves is much smaller than the typical length-scale of near-wall turbulent structures, the dynamical boundary condition is expressed by a mobility tensor, which relates the slip velocity and the surface shear stress. Based on the derived mathematical relationship between the friction drag and different dynamical contributions, it is shown how the turbulence contribution can be extracted and analyzed. |
| ID-Nummer: | Artikel-ID: 022028 |
| Zusätzliche Informationen: | 13th European Turbulence Conference (ETC13) |
| Fachbereich(e)/-gebiet(e): | Exzellenzinitiative Exzellenzinitiative > Exzellenzcluster Zentrale Einrichtungen Exzellenzinitiative > Exzellenzcluster > Center of Smart Interfaces (CSI) |
| Hinterlegungsdatum: | 17 Dez 2014 13:54 |
| Letzte Änderung: | 12 Mär 2024 09:39 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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Effects of spatially varying slip length on friction drag reduction in wall turbulence. (deposited 06 Feb 2024 10:00)
- Effects of Spatially Varying slip Length on Friction drag Reduction in wall Turbulence. (deposited 17 Dez 2014 13:54) [Gegenwärtig angezeigt]
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