Criscione, Antonio ; Frohnapfel, Bettina ; Tropea, Cameron (2011)
Preliminary Numerical Assessment of Turbulent Flow Control with Plasma Actuators.
17. DGLR-Fach-Symposium der STAB 2010, Berlin, Germany. Berlin (09.10.2010-10.10.2010)
Konferenzveröffentlichung, Erstveröffentlichung
Kurzbeschreibung (Abstract)
A numerical investigation of damping of near-wall spanwise velocity fluctuations in a turbulent channel flow is carried out. Spanwise damping is realized with a body force which mimics the characteristic force distribution of plasma actuators. This force distribution is implemented in a direct numerical simulation. The body force is triggered by the signal of a sensor in upstream location. The control loop is applied with different actuator configurations, considering a spatially continuous and discontinuous body force distribution at the wall. The influence of distributed sensors and actuators of finite size on the control loop performance is investigated. The results show a reduction of the skin friction at the wall with maximum power saving rates up to 20%.
| Typ des Eintrags: | Konferenzveröffentlichung |
|---|---|
| Erschienen: | 2011 |
| Autor(en): | Criscione, Antonio ; Frohnapfel, Bettina ; Tropea, Cameron |
| Art des Eintrags: | Erstveröffentlichung |
| Titel: | Preliminary Numerical Assessment of Turbulent Flow Control with Plasma Actuators |
| Sprache: | Englisch |
| Publikationsjahr: | 29 Juli 2011 |
| Ort: | Darmstadt |
| Veranstaltungstitel: | 17. DGLR-Fach-Symposium der STAB 2010, Berlin, Germany |
| Veranstaltungsort: | Berlin |
| Veranstaltungsdatum: | 09.10.2010-10.10.2010 |
| URL / URN: | urn:nbn:de:tuda-tuprints-26938 |
| Kurzbeschreibung (Abstract): | A numerical investigation of damping of near-wall spanwise velocity fluctuations in a turbulent channel flow is carried out. Spanwise damping is realized with a body force which mimics the characteristic force distribution of plasma actuators. This force distribution is implemented in a direct numerical simulation. The body force is triggered by the signal of a sensor in upstream location. The control loop is applied with different actuator configurations, considering a spatially continuous and discontinuous body force distribution at the wall. The influence of distributed sensors and actuators of finite size on the control loop performance is investigated. The results show a reduction of the skin friction at the wall with maximum power saving rates up to 20%. |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau |
| Hinterlegungsdatum: | 29 Jul 2011 09:28 |
| Letzte Änderung: | 29 Sep 2023 11:46 |
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