Zanke, Ulrich ; Roland, Aron (2022)
On Ripples - A Boundary Layer-Theoretical Definition.
In: Water, 13 (7)
doi: 10.3390/w13070892
Artikel, Bibliographie
Dies ist die neueste Version dieses Eintrags.
Kurzbeschreibung (Abstract)
Once the first initial ripples have developed, they form according to the actual flow forces and sediment properties. In this paper, a semianalytical approach to determine the length of the developed ripples is presented. The theory assumes initial disturbances at the bed surface and corresponding flow separations resulting from an individual respective boundary layer. What causes the initial rhythmic perturbations is not the subject of this paper. Based on boundary layer theory, this approach explains a possible physical background for the existence and length of developed ripples in cohesion-free sediments. At the same time, the approach provides a distinction from dunes: ripples are sand waves affected by a viscous sublayer, and dunes are sand waves where this is not the case. Applications to Earth, Mars, and Titan are shown.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Zanke, Ulrich ; Roland, Aron |
| Art des Eintrags: | Bibliographie |
| Titel: | On Ripples - A Boundary Layer-Theoretical Definition |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Verlag: | MDPI |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Water |
| Jahrgang/Volume einer Zeitschrift: | 13 |
| (Heft-)Nummer: | 7 |
| Kollation: | 19 Seiten |
| DOI: | 10.3390/w13070892 |
| Zugehörige Links: | |
| Kurzbeschreibung (Abstract): | Once the first initial ripples have developed, they form according to the actual flow forces and sediment properties. In this paper, a semianalytical approach to determine the length of the developed ripples is presented. The theory assumes initial disturbances at the bed surface and corresponding flow separations resulting from an individual respective boundary layer. What causes the initial rhythmic perturbations is not the subject of this paper. Based on boundary layer theory, this approach explains a possible physical background for the existence and length of developed ripples in cohesion-free sediments. At the same time, the approach provides a distinction from dunes: ripples are sand waves affected by a viscous sublayer, and dunes are sand waves where this is not the case. Applications to Earth, Mars, and Titan are shown. |
| Freie Schlagworte: | sediment transport, ripples, dunes, bed forms, Mars, Titan |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 13 Fachbereich Bau- und Umweltingenieurwissenschaften 13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut Wasserbau und Wasserwirtschaft |
| Hinterlegungsdatum: | 02 Aug 2024 12:37 |
| Letzte Änderung: | 02 Aug 2024 12:37 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
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On Ripples - A Boundary Layer-Theoretical Definition. (deposited 02 Feb 2022 13:24)
- On Ripples - A Boundary Layer-Theoretical Definition. (deposited 02 Aug 2024 12:37) [Gegenwärtig angezeigt]
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