Guenther, Silke ; Oberlack, Martin ; Brethouwer, Geert ; Johansson, A. V. (2004)
Investigations of shear-free turbulent diffusion in a rotating frame.
In: PAMM — Proceedings in Applied Mathematics and Mechanics, 4 (1)
doi: 10.1002/pamm.200410210
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We reconsider the problem of shear free turbulent diffusion in a rotating frame, rotating about x1. Shear free turbulence is generated at a vibrating grid in the x2–x3 plane and diffuses away from the grid in x1 direction. An important property of this flow case is that there is no mean flow-velocity. With the help of Lie-group methods Reynolds-stress transport models can be analyzed for this kind of flow in a rotating frame. From the analysis it can be found, that the turbulent diffusion only influences a finite domain. Implicating this solution in the model equations shows that even fully nonlinear Reynolds-stress transport models (non-linear in the Reynolds-stresses for the pressure-strain model) are insensitive to rotation for this type of flow.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2004 |
| Autor(en): | Guenther, Silke ; Oberlack, Martin ; Brethouwer, Geert ; Johansson, A. V. |
| Art des Eintrags: | Bibliographie |
| Titel: | Investigations of shear-free turbulent diffusion in a rotating frame |
| Sprache: | Englisch |
| Publikationsjahr: | 2004 |
| Ort: | Weinheim |
| Verlag: | Wiley |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | PAMM — Proceedings in Applied Mathematics and Mechanics |
| Jahrgang/Volume einer Zeitschrift: | 4 |
| (Heft-)Nummer: | 1 |
| DOI: | 10.1002/pamm.200410210 |
| Kurzbeschreibung (Abstract): | We reconsider the problem of shear free turbulent diffusion in a rotating frame, rotating about x1. Shear free turbulence is generated at a vibrating grid in the x2–x3 plane and diffuses away from the grid in x1 direction. An important property of this flow case is that there is no mean flow-velocity. With the help of Lie-group methods Reynolds-stress transport models can be analyzed for this kind of flow in a rotating frame. From the analysis it can be found, that the turbulent diffusion only influences a finite domain. Implicating this solution in the model equations shows that even fully nonlinear Reynolds-stress transport models (non-linear in the Reynolds-stresses for the pressure-strain model) are insensitive to rotation for this type of flow. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Strömungsdynamik (fdy) |
| Hinterlegungsdatum: | 20 Nov 2008 08:26 |
| Letzte Änderung: | 15 Nov 2024 09:23 |
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