Cloos, Ferdinand-J. ; Zimmermann, Anna-L. ; Pelz, Peter F. (2022)
A Second Turbulent Regime When a Fully Developed Axial Turbulent Flow Enters a Rotating Pipe.
ASME Turbo Expo 2016 - Turbomachinery Technical Conference and Exposition GT2016. Seoul, South Korea (13.06.2016-17.06.2016)
doi: 10.26083/tuprints-00021469
Konferenzveröffentlichung, Zweitveröffentlichung, Postprint
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Kurzbeschreibung (Abstract)
When a fluid enters a rotating circular pipe a swirl boundary layer with thickness of δ̃s appears at the wall and interacts with the axial momentum boundary layer with thickness of δ̃. We investigate a turbulent flow applying Laser-Doppler-Anemometry to measure the circumferential velocity profile at the inlet of the rotating pipe. The measured swirl boundary layer thickness follows a power law taking Reynolds number and flow number into account. A combination of high Reynolds number, high flow number and axial position causes a transition of the swirl boundary layer development in the turbulent regime. At this combination, the swirl boundary layer thickness as well as the turbulence intensity increase and the latter yields a self-similarity. The circumferential velocity profile changes to a new presented self-similarity as well. We define the transition inlet length, where the transition appears and a stability map for the two regimes is given for the case of a fully developed axial turbulent flow enters the rotating pipe.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2022 |
| Autor(en): | Cloos, Ferdinand-J. ; Zimmermann, Anna-L. ; Pelz, Peter F. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | A Second Turbulent Regime When a Fully Developed Axial Turbulent Flow Enters a Rotating Pipe |
| Sprache: | Englisch |
| Publikationsjahr: | 2022 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2016 |
| Verlag: | ASME |
| Buchtitel: | Proceedings of ASME Turbo Expo 2016 - Turbomachinery Technical Conference and Exposition GT2016 June 13-17, 2016, Seoul, South Korea. Volume 2B: Turbomachinery |
| Reihe: | Proceedings of ASME Turbo Expo 2016 - Turbomachinery Technical Conference and Exposition GT2016 |
| Band einer Reihe: | 2B |
| Kollation: | 9 Seiten |
| Veranstaltungstitel: | ASME Turbo Expo 2016 - Turbomachinery Technical Conference and Exposition GT2016 |
| Veranstaltungsort: | Seoul, South Korea |
| Veranstaltungsdatum: | 13.06.2016-17.06.2016 |
| DOI: | 10.26083/tuprints-00021469 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/21469 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | When a fluid enters a rotating circular pipe a swirl boundary layer with thickness of δ̃s appears at the wall and interacts with the axial momentum boundary layer with thickness of δ̃. We investigate a turbulent flow applying Laser-Doppler-Anemometry to measure the circumferential velocity profile at the inlet of the rotating pipe. The measured swirl boundary layer thickness follows a power law taking Reynolds number and flow number into account. A combination of high Reynolds number, high flow number and axial position causes a transition of the swirl boundary layer development in the turbulent regime. At this combination, the swirl boundary layer thickness as well as the turbulence intensity increase and the latter yields a self-similarity. The circumferential velocity profile changes to a new presented self-similarity as well. We define the transition inlet length, where the transition appears and a stability map for the two regimes is given for the case of a fully developed axial turbulent flow enters the rotating pipe. |
| Status: | Postprint |
| URN: | urn:nbn:de:tuda-tuprints-214695 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Institut für Fluidsystemtechnik (FST) (seit 01.10.2006) |
| Hinterlegungsdatum: | 07 Jun 2022 13:37 |
| Letzte Änderung: | 08 Jun 2022 06:23 |
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| Suche nach Titel in: | TUfind oder in Google |
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- A Second Turbulent Regime When a Fully Developed Axial Turbulent Flow Enters a Rotating Pipe. (deposited 07 Jun 2022 13:37) [Gegenwärtig angezeigt]
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