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Grosche, Friedrich-Reinhard und Lu, Mei und Kreplin, Hans-Peter (2003) Control of flow around bluff bodies by passive wake ventilation. In: New results in numerical and experimental fluid mechanics IV Notes on numerical fluid mechanics and multidisciplinary design, 87. Springer Verlag. Seiten 140-147. ISBN 3-540-20258-7.
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Kurzfassung
Flow control by passive ventilation of wakes of spheres and elongated bluff bodies of different fineness ratios was investigated in the Göttingen High Pressure Wind Tunnel at Reynolds numbers up to 10<sup>7</sup>. Wake ventilation was provided by a central duct along the model axis connecting the stagnation region in front of the body with the wake region in the rear. A very substantial drag reduction was observed at supercritical and transcritical Reynolds numbers, reaching up to 66% for spheres. High drag reductions were also found for elongated bluff bodies at angle of incidence 5 deg and 10 deg. At zero angle of incidence the ventilation effect decreases with increasing fineness ratio. Pitching moment was enhanced by wake ventilation.
| elib-URL des Eintrags: | https://elib.dlr.de/12960/ | ||||||||||||||||
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| Dokumentart: | Beitrag im Sammelband | ||||||||||||||||
| Zusätzliche Informationen: | LIDO-Berichtsjahr=2005, | ||||||||||||||||
| Titel: | Control of flow around bluff bodies by passive wake ventilation | ||||||||||||||||
| Autoren: |
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| Datum: | 2003 | ||||||||||||||||
| Erschienen in: | New results in numerical and experimental fluid mechanics IV | ||||||||||||||||
| Referierte Publikation: | Ja | ||||||||||||||||
| Open Access: | Nein | ||||||||||||||||
| Gold Open Access: | Nein | ||||||||||||||||
| In SCOPUS: | Nein | ||||||||||||||||
| In ISI Web of Science: | Nein | ||||||||||||||||
| Band: | 87 | ||||||||||||||||
| Seitenbereich: | Seiten 140-147 | ||||||||||||||||
| Herausgeber: |
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| Verlag: | Springer Verlag | ||||||||||||||||
| Name der Reihe: | Notes on numerical fluid mechanics and multidisciplinary design | ||||||||||||||||
| ISBN: | 3-540-20258-7 | ||||||||||||||||
| Status: | veröffentlicht | ||||||||||||||||
| Stichwörter: | bluff bodies, separation control, ventilation | ||||||||||||||||
| HGF - Forschungsbereich: | Verkehr und Weltraum (alt) | ||||||||||||||||
| HGF - Programm: | Luftfahrt | ||||||||||||||||
| HGF - Programmthema: | Starrflügler (alt) | ||||||||||||||||
| DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||
| DLR - Forschungsgebiet: | L AR - Starrflüglerforschung | ||||||||||||||||
| DLR - Teilgebiet (Projekt, Vorhaben): | L - keine Zuordnung (alt) | ||||||||||||||||
| Standort: | Köln-Porz , Braunschweig , Göttingen | ||||||||||||||||
| Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik | ||||||||||||||||
| Hinterlegt von: | DLR-Beauftragter, elib | ||||||||||||||||
| Hinterlegt am: | 15 Feb 2006 | ||||||||||||||||
| Letzte Änderung: | 14 Jan 2010 19:45 |
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