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Preliminary Numerical Assessment of Turbulent Flow Control with Plasma Actuators

Criscione, Antonio and Frohnapfel, Bettina and Tropea, Cameron (2010):
Preliminary Numerical Assessment of Turbulent Flow Control with Plasma Actuators.
In: 17. DGLR-Fach-Symposium der STAB 2010, Berlin, Germany, [Online-Edition: urn:nbn:de:tuda-tuprints-26938],
[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 and Frohnapfel, Bettina and 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
Official URL: urn:nbn:de:tuda-tuprints-26938
License: Creative Commons: Attribution-Noncommercial-No Derivative Works 3.0
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