Criscione, Antonio ; Frohnapfel, Bettina ; Tropea, Cameron (2010):
Preliminary Numerical Assessment of Turbulent Flow Control with Plasma Actuators.
17. DGLR-Fach-Symposium der STAB 2010, Berlin, Germany, [Conference or Workshop Item]
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%.
| Item Type: | Conference or Workshop Item |
|---|---|
| Erschienen: | 2010 |
| Creators: | Criscione, Antonio ; Frohnapfel, Bettina ; Tropea, Cameron |
| Title: | Preliminary Numerical Assessment of Turbulent Flow Control with Plasma Actuators |
| Language: | English |
| 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%. |
| Divisions: | 16 Department of Mechanical Engineering |
| Event Title: | 17. DGLR-Fach-Symposium der STAB 2010, Berlin, Germany |
| Date Deposited: | 29 Jul 2011 09:28 |
| URL / URN: | urn:nbn:de:tuda-tuprints-26938 |
| License: | Creative Commons: Attribution-Noncommercial-No Derivative Works 3.0 |
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